HSA Natural Science Mega Mock Test : 2022 [കലാശക്കൊട്ട് ]

🛑 Questions : 372

🛑 Time : NO LIMIT

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1) In mammals, veins differs from arteries in having ?

A) Deeply present

B) Internal valves

C) Thicker walls

D) Carry blood away from heart

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2) in a living body coagulation of blood in the blood vessel is prevented by ?

A) Plasminogen and Calcium together

B) Prothrombin and Calcium together

C) Prothrombin

D) Heparin

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3) Tricuspid and bicuspid or mitral valve is present in between respectively ?

A) Right ventricle and left Atrium & right ventricle and right Atrium

B) Right Atrium and right ventricle , &left Atrium and left ventricle

C) Left Atrium left ventricle ,&right Atrium right ventricle

D) Left ventricle and right Atrium, &right ventricle and left Atrium

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4) The process which brings about entry of water into seed coat when seeds are placed in water for germination is ___?

A) Imbibition

B) Diffusion

C) Osmosis

D) DPD

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5) What is total diastolic time of ventricle in cardiac cycle ?

A) 0.10 second

B) 0.30 second

C) 0.50 second

D) 0.40 second

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6) The other term for heart attack is ?

A) Cardiac arrest

B) Coronary thrombosis

C) Ischemia

D) Myocardial infarction

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7) If the external solution balances the osmotic pressure of cytoplasm. It is said to be ___?

A) Atomic

B) Hypertonic

C) Isotonic

D) Hypotonic

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8) The outermost and innermost wall layers of microsporangium in an anther are respectively [NCERT PG NO 21]

A) Epidermis , tapetum

B) Epidermis, endothecium

C) Endothecium , epidermis

D) Tapetum , epidermis

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9) In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is (NCERT XII : 213)

A) Research Committee on Genetic Manipulation (RCGM)

B) Council for Scientific and Industrial Research (CSIR)

C) Indian Council of Medical Research (ICMR)

D) Genetic Engineering Appraisal Committee (GEAC).

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10) If a plasmolysed cell has OP = 10, TP = - 2 , It's DPD will be ____?

A) 8

B) 12

C) 2

D) 18

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11) പാലിയം സത്യാഗ്രഹം ആരംഭിച്ച വർഷം?

A) 1947

B) 1944

C) 1946

D) 1945

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12) Osmosis is a specific form of _________?

A) Active transport

B) Diffusion

C) Facilitated diffusion

D) Secondary active transport

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13) Which of the following is correct about facilitated Active transport ?

A) Both use carbohydrate to move the molecules across the membrane

B) Both need energy

C) Both need carrier proteins which are sensitive to inhibitors that react with protein side chains

D) Both need no ATP

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14) In ICSI , sperm is directly injected the__________ [NCERT PG NO 64]

A) Fallopian tube

B) Uterus

C) Vagina

D) Ovum

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15) Clot formed by a network of the thread head injury site is composed of ?

A) Fibrin protein

B) Dead and damaged formed element

C) All Of the Above

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16) Patterns and designs of exine of pollen grains are Characteristic feature of [NCERT PG NO 23]

A) Order of plants

B) None of these

C) Species of plant

D) Genus of plants

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17) Blood group do not contain any antibody in its plasma ?

A) A

B) AB

C) O

D) B

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18) All three wall layers perform the function of protection & help in dehiscence of anther to release pollen except [NCERT PG NO 21]

A) Endothecium

B) Epidermis

C) Middle layers

D) Tapetum

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19) What are the various aspects of reproduction covered by WHO? [NCERT PG NO 57]

A) Physical, Emotional, Behavioural, Social

B) Physical, Emotional, Social

C) Physical, Emotional, Behavioural

D) Physical, Emotional, Gestational, Social

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20) Which one of the following groups includes sexually transmitted infections caused by virus only ?

A) Gonorrhoea, Scabies, Trichomoniasis

B) Genital warts, Hepatitis B, AIDS

C) Syphilis, AIDS, Genital herpes

D) Hepatitis, Chlamydiasis, Chancroid

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21) Which of the following plant is used to extract the blue dye ?

A) Lupin

B) Indigofera

C) Trifolium

D) Cassia

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22) Choose the correct relation ____?

A) Ψs = Ψp + Ψm.

B) Ψw = Ψs + Ψp

C) Ψp = Ψw

D) Ψp = Ψw + Ψp + Ψm.

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23) Which vector can clone only a small fragment of DNA?

A) Cosmid

B) Bacterial artificial chromosome

C) Plasmid

D) Yeast artificial chromosome

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24) Apex of heart is ?

A) Lower and tilted towards right

B) Upper and tilted toward left

C) Lower and tilted towards left

D) Upper and tilted towards right

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25) Water will move from its region of high chemical potential/concentration to its region of lower chemical potential until __?

A) Water amount in both regions becomes equal

B) Solute amount in both regions becomes equal

C) Amount of both solvent and solutes in both regions becomes equal

D) Equilibrium is reached / DPD of both regions becomes same

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26) The number of Chambers in the heart of fishes amphibian and birds ?

A) 2,4,4

B) 2,3,4

C) 3,3,4

D) 2,2,4

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27) Building block of nucleic acid is ...........

A) Nucleotide

B) Nucleoside

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28) The diaphragm is a rubber dome shaped structure and stops the sperms from entering into [NCERT PG NO 60]

A) Vestibule

B) Both A&B

C) Cervix

D) Vagina

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29) Sepals also remain attached in plant after fertilisation only in [NCERT PG NO 16]

A) Solanaceae

B) Fabaceae

C) Leguminaceae

D) Liliaceae

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30) The genetically-modified (GM) brinjal in India has been developed for (NCERT XII : 208)

A) insect-resistance

B) drought-resistance.

C) enhancing mineral content

D) enhancing shelf life

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31) Which of the following is not a feature of the plasmids?

A) Circular structure

B) Transferable

C) Single-stranded

D) Independent replication

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32) Gel electrophoresis is used for (NCERT XII:198)

A) cutting of DNA into fragments

B) construction of recombinant DNA by joining with cloning vectors

C) separation of DNA fragments according to their size.

D) isolation of DNA molecules

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33) The placenta is attached to the developing seed near the

A) Testa

B) Micropyle

C) Chalaza

D) Hilum

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34) Polar nuclei are situated in the central cell - [NCERT]

A) Below the antipodals

B) Above the egg apparatus

C) Below the egg apparatus

D) All of the above

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35) Maize grain is a fruit known as ?

A) Achene

B) Caryopsis

C) Cypsela

D) Legume

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36) To achieve three celled stage in angiosperm which cell of pollen grain divide to form two male gametes [NCERT PG NO 23]

A) Vegetative cell

B) All of the above

C) Generative cell

D) Microspore mother cell

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37) മദ്യം മസ്തിഷ്കത്തിലെ ഏത് നാഡീയ പ്രേക്ഷകത്തിന്റെ ഉൽപാദനത്തെയാണ് ത്വരിതപ്പെടുത്തുന്നത്

A) GABN

B) GABA

C) GABN

D) GBNA

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38) Protein with catalytic power is named ______?

A) Nucleic acids

B) Ribosome

C) Enzymes

D) Amino acids

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39) Which one of the following statements is correct with respect to immunity ?

A) Preformed antibodies need to the injected to treat the bite by a viper snake

B) The antibodies against small pox pathogen are produced by T-lymphocytes

C) Antibodies are protein molecules, each of which has four light chains

D) Rejection of a kidney graft is the function of B-lymphocytes

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40) In an ecosystem, organism occupies a specific place in a food chain called

A) Progressive straight line

B) Trophic level

C) Standing crop

D) Branching lines

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41) Two or more aspects are understood in ?

A) Extended abstract level

B) Multistructural level

C) Rational level

D) Unistructural lever

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42) Two bacteria found to be very useful in genetic engineering experiments are

A) Nitrosomonas and Klebsiella

B) Escherichia and Agrobacterium.

C) Nitrobacter and Azotobacter

D) Rhizobium and Diplococcus

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43) A natural method of contraception, periodic abstinence is [NCERT PG 59]

A) Abstaining from coitus from day 17 to 22 of the menstrual cycle.

B) Abstaining from coitus from day 5 to 10 of the menstrual cycle.

C) Abstaining from coitus from day 10 to 17 of the menstrual cycle.

D) Abstaining from coitus from day 1 to 5 of the menstrual cycle.

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44) For a solution / a cell ___?

A) Ψw is negative but Ψs is positive

B) Both Ψw and Ψs are negative

C) Ψw is positive but Ψs is negative

D) Both are positive

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45) Golden rice is a transgenic crop of the future with the following improved trait?

A) insect resistance

B) high protein content

C) high lysine (essential amino acid) content

D) high vitamin-A content.

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46) Ovarian stroma is enclosed by a thin ____. [NCERT PG NO 44]

A) Epithelium

B) Mesothelium

C) Endothelium

D) Ciliated epithelial

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47) Which one of the following is not a functional unit of an ecosystem

A) Energy flow

B) Decomposition

C) Productivity

D) Stratification

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48) Most herbaceous plants have how much dry weight of its total fresh weight ?

A) 92 %

B) 29 %

C) 10 - 15 %

D) 50 %

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49) The population of India at the time of independence was about

A) 250 million

B) 350 million

C) 450 million

D) 550 million

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50) Pollination by water is limited to about [NCERT PG NO 29]

A) 20 genera, mostly monocot

B) 30 genera , mostly dicot

C) 20 genera , mostly dicot

D) 30 genera , mostly monocot

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51) The Taq polymerase enzyme is obtained from ?

A) Thermus aquaticus

B) Bacillus subtilis

C) Thiobacillus ferroxidans.

D) Pseudomonas putida

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52) The seminiferous tubules of the testis open into the vasa efferentia through [NCERT PG NO 43]

A) Vasa deferentia

B) Rete testis

C) Seminiferous tubules

D) Epididymis

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53) Which one of the following is a case of wrong matching ?

A) Vector DNA – Site for tRNA synthesis

B) Somatic – Fusion of two hybridization diverse cells

C) Callus – Unorganized mass of cells produced in tissue culture

D) Micropropagation – In vitro production of plants in large numbers

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54) Most abundant protein in plants is ..........

A) RuBisCO

B) Chloroplast

C) Hemoglobin

D) Callagen

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55) Anther is generally

A) Tetrasporangiate

B) Bisporangiate

C) Monosporangiate

D) Trisporangiate

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56) What is antisense technology? (NCERT XII:209)

A) A cell displaying a foreign antigen used for synthesis of antigens

B) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene

C) Production of somaclonal variants in tissue cultures

D) RNA polymerase producing DNA

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57) Blood group which do not contain any antigen on its surface ?

A) B

B) O

C) A

D) AB

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58) Wider part of the oviduct is [NCERT PG NO 46]

A) Ampulla

B) Infundibulum

C) Fimbriae

D) Isthmus

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59) Which is not the focal point of the triangular process of teaching ?

A) Teacher

B) contents

C) Teaching method

D) Pupil

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60) Which of the following animal is bisexual ?

A) Monkey

B) Honey bee

C) Cockroach

D) Leech

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61) Zoospores are [ NCERT PG NO 7]

A) Microscopic non motile structure

B) Macroscopic non motile structure

C) Macroscopic motile structure

D) Microscopic motile structure

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62) Water potential is ______?

A) Equal to solute potential

B) A tendency of a solution to take up water from another solution across a membrane

C) Equal to pressure potential

D) Equal to O. P.

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63) If a pressure greater than atmospheric pressure is applied to pure water and a solution, it's " Ψw " value ?

A) Will be equal to Ψp

B) Decreases

C) Increases

D) Remains constant

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64) Biologists describes the protein structure at ________?

A) 6 levels

B) 2 levels

C) 3 levels

D) 4 levels

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65) What is the amount of average price tag on nature's life support services determined by Robert Constanza and his colleagues

A) US $ 33 trillion a year

B) US $ 23 trillion a year

C) US $ 3 trillion a year

D) US $ 18 trillion a year

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66) In in birds and mammals the oxygenated and deoxygenated blood is received by?

A) Left and right atria

B) Left atria and left ventricle

C) Left atria and right ventricle

D) Left and right ventricles

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67) An individual transitional communities in ecological succession are termed as

A) Single community

B) Climax community

C) Seral community

D) Pioneer community

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68) In majority of angiosperm [NEET 2016]

A) Small Central cell is present in the embryo sac

B) Egg has filiform apparatus

C) Reduction division occur in the megaspore mother cell

D) There are numerous antipodal cells

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69) In angiosperm , Over _______ pollen grains shed at 2 celled stage & _______ pollen grains shed at 3 celled stage . [NCERT PG NO 23,]

A) 70% , 30%

B) 30%, 70%

C) 60%, 40%

D) 40%, 60%

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70) Enzyme Carbonic anhydrase is present in _____ ?

A) Cell wall

B) Nucleus

C) Cell Membrane

D) Cytoplasm

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71) Chitin is a ..........

A) Heteropolymer

B) Homopolymer

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72) Adult hemoglobin consists of four subunit of these are identical to each other that are the 4 units ______?

A) 1 beta ans 1 alpha type

B) 3 alpha and 1 beta

C) 1 alpha type and 3 beta type

D) 2 alpha type and 2 beta type

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73) Maize grain is a fruit known as

A) Cypsela

B) Caryopsis

C) Achene

D) Legume

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74) Lecithin is a ..............

A) Phospholipid

B) Steroid

C) Glycolipid

D) Carbohydrate

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75) മലബാറിൽ പാശ്ചാത്യ വിദ്യാഭ്യാസത്തിന് അടിസ്ഥാനമിട്ടത്?

A) ലണ്ടൻ മിഷൻ സൊസൈറ്റി

B) സിഎംഎസ് മിഷൻ

C) ദി സൊസൈറ്റി ഓഫ് ജീസസ്

D) ബാസൽ ജർമൻ ഇവാഞ്ചലിക്കൽ മിഷൻ

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76) Estrous cycle is found in

A) Gibbon

B) Gorilla

C) Monkey

D) Cow

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77) Transport substances across a membrane from an area of lower concentration to an area of higher concentration requires _______?

A) Diffusion

B) Phospholipid

C) Energy

D) Facilitated diffusion

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78) In 60% Of the angiosperms shed their pollens at the [NCERT PG NO 23]

A) 4- Celled stage

B) 2 -Celled stage

C) 3- Celled stage

D) 1- celled stage

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79) Biosynthetic pathways is also called _____?

A) Catalytic pathways

B) Both anabolic and catabolic pathways

C) Catabolic pathways

D) Anabolic pathways

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80) രണ്ട് ശ്വാസകോശങ്ങളുടെയും വായു അറകളുടെ ആകെ പ്രതല വിസ്തീർണ്ണം ഏകദേശം എത്ര ചതുരശ്ര മീറ്റർ ആണ്??

A) 80

B) 60

C) 70

D) 50

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81) കോക്ലിയക്ക് എത്ര അറകൾ ഉണ്ട്?

A) 4

B) 2

C) 3

D) 1

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82) Elicitors are molecules that ...........?

A) induce cell divison

B) stimulate hairy root formation that accumulate secondary metabolites

C) stimulate production secondary metabolites

D) none of these

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83) It is the vital link that ensure continuity of species. [NCERT PG NO 15]

A) All of these

B) Zygote

C) Embryo

D) Gamete

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84) മുംബൈ മെട്രോയ്ക്ക് വേണ്ടി ആരെ ഫോറസ്റ്റ് നശിപ്പിക്കുന്നതിനു എതിരെ സമരം നടത്തിയ ഗോത്ര വർഗം?

A) ചമോലി

B) വാർലി

C) സിംഗുബം

D) കജർലി

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85) Primarily Involve in the defense mechanism of the body ?

A) Albumins

B) Globulins

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86) അബ്കാരി നിയമപ്രകാരം താഴെപ്പറയുന്നവയിൽ ശരിയായ ജോഡി ഏതെന്ന് കണ്ടെത്തുക

A) എല്ലാം ശരി

B) സെക്ഷൻ 3 (6A) - ചാരായം

C) സെക്ഷൻ 3 (9) - സ്പിരിറ്റ്

D) സെക്ഷൻ 3 (8) - കള്ള്

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87) Artificial seeds are.........

A) seeds produced in laboratory condition

B) seeds encapsulated in a a gel

C) somatic embryos encapsulated in a gel

D) zygotic embryos encapsulated in a gel

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88) When different types of molecules in a fluid move together in response to a pressure gradient, this is called ________?

A) Facilitated diffusion

B) Joined response

C) Bulk flow

D) Pressured movement

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89) A secondary metabolite that is alkaloid in nature is _______ ?

A) Codeine

B) Anthrocyanin

C) Gum

D) Abrin

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90) ശരിയായത് ഏത് ?

മണ്ണും രാസവളങ്ങളും കീടനാശിനികളും പൂർണമായും ഒഴിവാക്കി മത്സ്യങ്ങളോടൊപ്പം പച്ചക്കറികളും പഴങ്ങളുംമെല്ലാം ജൈവരീതിയിൽ ഉൽപാദിപ്പിക്കപെടുന്ന സങ്കേതമാണ് അക്വാപോണിക്സ്.
മത്സ്യകൃഷിയും മണ്ണില്ലാ കൃഷിരീതിയായ ഹൈഡ്രോപോണിക്സും സംയോജിക്കപ്പെട്ട കൃഷിരീതിയാണിത്.
അക്വാ പോണിക്സ് രീതിയിൽ വളരുന്ന ചെടികൾക്ക് നനയോ വളപ്രയോഗമോ ആവശ്യമില്ല

A) 1,3

B) 1,2

C) 1,2,3

D) 2,3

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91) How many % of Blood is plasma?

A) 90-95

B) 60%

C) 55%

D) 99-99%

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92) In which of the following, both autogamy and geitonogamy are prevented

A) Wheat

B) Papaya

C) Castor

D) Maize

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93) മലിന ജലത്തിലെ BOD?

A) 10ppm ന് മുകളിൽ

B) 12 ppm ന് മുകളിൽ

C) 17 ppm നു മുകളിൽ

D) 5 ppm നു മുകളിൽ

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94) Four chambered heart is not present in ?

A) Crocodile

B) Amphibians

C) Birds

D) Mammals

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95) Which of the following is an example of man made ecosystem

A) Desert

B) An island

C) Forest

D) Aquarium

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96) Every 500 ml of oxygenated blood can deliver around _________ of O2 to the tissue ?

A) 50 ml

B) 15 ml

C) 25 ml

D) 100 ml

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97) Out of the total propsed cost of various ecosystem services, cost of climate regulations and habitat for wildlife are

A) 10%

B) 6%

C) 20%

D) 50%

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98) Amniocentesis is used to test for the presence of certain genetic disorders except [NCERT PG NO 58]

A) Sickle cell anaemia

B) Down syndrome

C) Haemophilia

D) Cleft palate

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99) Which one is a true statement regarding DNA polymerase used in PCR? (NCERT XII:203)

A) It is isolated from a virus.

B) It remains active at high temperature.

C) It serves as a selectable marker.

D) It is used to ligate introduced DNA in recipient cells.

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100) Water potential _____?

A) Of pure water is zero but of solution is always less than zero

B) Of a solution is always zero

C) Of a solution is alyays positive

D) Of a solution is always greater that of pure H₂O

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101) The process of separation and purification of expressed protein before marketing is called (NCERT XII:204)

A) postproduction processing

B) upstream processing

C) bioprocessing

D) downstream processing

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102) Which of the following is correct for standard ECG ?

A) Q marks the beginning of systole

B) By counting the number of the QRS one can determine the heart rate of an individual

C) P -WAVE represent excitation or depolarization of Atria

D) All are correct

E) QRS Complex represent depolarization of ventricles

F) T- wave represent the return of ventricle from excited to the normal state (repolarisation)

G) T marks the end of systole

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103) Seminiferous tubules contain __________ for providing nutrition to sperm cells. [NCERT PG NO 43]

A) Sertoli cells

B) Leydig cells

C) Interstitial cells

D) Germ cells

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104) The process of RNA interference (RNAi) has been used in the development of plants resistant to __?

A) fungi

B) viruses

C) nematodes

D) insects.

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105) അടിമകൾ എങ്ങനെ ഉടമകളായി എന്ന മലയാള കൃതി രചിച്ചത്?

A) എ കെ ഗോപാലൻ

B) പി കൃഷ്ണപിള്ള

C) വിഷ്ണു ഭാരതീയൻ

D) കെ പി ആർ ഗോപാലൻ

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106) Imbibition is ___?

A) Diffusion

B) Faciliated diffusion

C) An active transport

D) Primary active transport

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107) Nature of waves in the heart is (CPMT) ?

A) Ligamentous

B) Tendinous

C) Muscular

D) Membranous

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108) Phase of menstrual cycle in human that lasts for 7-8 days is

A) Follicular phase

B) Menstruation

C) Luteal phase

D) Ovulatory phase

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109) find the correct descending order of percentage proportion of leukocyte in the human blood?

A) Neutrophils >> lymphocytes >> Monocytes >> Acidophils >> basophils

B) Neutrophils >> basophils >> lymphocytes >>Eosinophils monocyte

C) Lymphocytes >> Acidophils >> basophils >> Neutrophils >>Monocytes

D) Monocytes >> Neutrophils >> lymphocytes >> Acidophils >> basophils

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110) Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement.(NCERT XII:196)

A) The enzyme cuts DNA molecule at identified position within the DNA.

B) The enzyme recognises a specific palindromic nucleotide sequence in the DNA.

C) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

D) The enzyme binds DNA at specific sites and cuts only one of the two strands.

111 / 372

111) Which of the following is best suited method for production of virus free plants?

A) ovule culture

B) anther culture

C) meristem culture

D) embryo culture

112 / 372

112) What is not correct with respect to testis in adults [NCERT]

A) 4-5 cm in length and width of 2-3 cm

B) Covered by a dense covering

C) Spherical in shape

D) Made up of 250 testicular compartments

113 / 372

113) How many sperms are formed from a secondary spermatocyte?

A) 1

B) 8

C) 4

D) 2

114 / 372

114) Inside the mature seed, it is the progenitor of the next generation .[NCERT PG NO 17]

A) Zygote

B) Gamete

C) Both B & C

D) Embryo

115 / 372

115) Active transport is important because it can move molecules ________?

A) By increasing their diffusing coefficient

B) From their high concentration to a lower concentration

C) From their low concentration to a higher concentration

D) With less ATP than might otherwise be used to move molecules

116 / 372

116) When the heart stop beating condition is called ?

A) Heart failure

B) Cardiac arrest

C) Congestive heart Failure

D) Heart attack

117 / 372

117) ഓരോ പള്ളിക്കും ഒപ്പം ഒരു പള്ളിക്കൂടം എന്ന ആശയം മുന്നോട്ട് വെച്ചത്?

A) പാമ്പാടി ജോൺ ജോസഫ്

B) കുര്യാക്കോസ് ചാവറ

C) പാലക്കുന്നത്ത് എബ്രഹാം malpan

D) പൊയ്കയിൽ യോഹന്നാൻ

118 / 372

118) Oxygenated blood is carried by

(OR)

Blood vessels carrying blood from lungs to heart

A) Hepatic portal vein

B) Renal vein

C) Pulmonary vein

D) Pulmonary artery

119 / 372

119) No new follicles develop in the luteal phase of the menstrual cycle because [NEET 2019]

A) Both FSH and LH levels are low in the luteal phase

B) Follicles do not remain in the ovary after

C) LH levels are high in the luteal phase

D) FSH levels are high in the luteal phase

120 / 372

120) The cofactor that associates with the apoenzyme only during course of Catalysis are called ______ ?

A) Cofactor

B) Coenzyme

C) Prosthetic group

D) Metal ions

121 / 372

121) Which of the following limits the movement of molecules when carrier mediated facilitated diffusion is involved ?

A) Temperature

B) Availability of carrier molecules

C) All of the above

D) Concentration gradient

122 / 372

122) Roots developed from the parts of the plants other than radicle are called

A) Fiberous roots

B) Adventitious roots

C) Tap roots

D) Nodular roots

123 / 372

123) Which of following structure of Starch can Hold I2 molecules and gives blue colour ?

A) Tertiary structure

B) Primary structure

C) Secondary structure

D) Quaternary structure

124 / 372

124) Which of the following contraceptive device is inserted by the doctor or trained nurse in the uterus through the vagina? [NCERT PG NO 60]

A) Cervical caps

B) Diaphragm

C) IUDs

D) Vaults

125 / 372

125) Select the correct option of haploid cells from the following groups :

A) Secondary spermatocyte, First polar body, Ovum

B) Primary oocyte, Secondary oocyte, Spermatid

C) Spermatogonia, Primary spermatocyte, Spermatid

D) Primary spermatocyte, Secondary spermatocyte, Second polar body

126 / 372

126) In India, marriageable age for boys is ____ and girls is ____ respectively. [NCERT]

A) 15, 14 years

B) 15, 18 years

C) 21, 18 years

D) 18, 21 years

127 / 372

127) Which of the following ecosystems is more productive in terms of net primary production

A) Oceans

B) Deserts

C) Tropical rainforest

D) Estuaries

128 / 372

128) Which light range is least effective in photosynthesis ?

A) Blue

B) Violet

C) Green

D) Red

129 / 372

129) Which is a major factor which could affect the binding of CO2 with Hb ?

A) pCO2

B) pO2

C) Temperature

D) H+ concentration

130 / 372

130) Conversion of fibrinogen is catalyzed by ?

A) Prothrombin

B) Thrombin

C) All of the above

D) Thromboplastin

131 / 372

131) In an embryo sac of anatropous ovule , cells present at chalazal end are called [NCERT PG NO 27]

A) Nucellar cells

B) Antipodal cells

C) All of these

D) Synergids

132 / 372

132) Enzymes exhibit which structure of proteins for biological activities... ?

A) Secondary

B) Quaternary

C) Primary

D) Tertiary

133 / 372

133)

A) B

B) A

C) C

D) D

134 / 372

134) Factors affecting the rate of diffusion are _______?

1) Gradient of concentration
2) Permeability of the membrane
3) Temperature
4) Pressure
5) Size of diffusing material

A) Only 5 is correct

B) 1, 2, 3, 4, 5 are correct

C) 1, 2 and 5 are correct

D) 1 and 5 are correct

135 / 372

135) In the heart of mammals, the bicuspid valve (mitral valve) is situated between ?

A) Post caval and right caval

B) Right auricle and left auricle

C) Right ventricle and pulmonary aorta

D) Left auricle and left ventricle

136 / 372

136) Example of wind pollination is [NCERT PG NO 29]

A) Vallisneria

B) Zostera

C) Corn cob

D) Hydrilla

137 / 372

137) A gene whose expression helps to identify transformed cell is known as (NCERT XII:199)

A) structural gene

B) selectable marker.

C) vector

D) plasmid

138 / 372

138) The percentage of water and protein in a straw coloured viscous fluid is

A) 90-95% and 10 %

B) 95 -97% and 3-5%

C) 70 % and 30 %

D) 90-92% and 6-8 %

139 / 372

139) Proximal end of the filament is attached to the [NCERT PG NO 21]

A) Anther

B) Placenta

C) Connective

D) Thalamus or petal

140 / 372

140) Energy for the detritus food chain comes from

A) Organic remain

B) Air

C) Radiation

D) Water

141 / 372

141) When a plant cell is placed in a hypotonic solution, which of the following occurs ?

A) Nothing occurs

B) The cell takes up water and eventually bursts

C) Plasmolysis occurs

D) The cell takes up water until the osmotic potential equals the pressure potential of the cell

142 / 372

142) Who occupies the centre of each microsporangia when the anther is young [NCERT PG NO 21]

A) Tapetum

B) Sporogenous tissue

C) Connective tissue

D) Middle layers

143 / 372

143) All are plant derived alkaloids except ?

A) codeine

B) quinine

C) nicotine

D) menthol

144 / 372

144) Which one of the following bacteria has found extensive use in genetic engineering work in plants?

A) Bacillus coagulens

B) Xanthomonas citri

C) Clostridium septicum

D) Agrobacterium tumefaciens

145 / 372

145) മോഹ്‌സ് സ്കെയിൽ പ്രകാരം വിരലിലെ നഖത്തിൻ്റെ കടുപ്പം എത്ര ?

A) 3.7

B) 3.5

C) 2.5

D) 4.6

146 / 372

146) Inability to conceive or produce children even after_______ of unprotected sexual cohabitation is called infertility .[NCERT SUMMARY]

A) 3 year

B) 4 year

C) 1 year

D) 2 year

147 / 372

147) The ovarian stroma is divided into zones [NCERT PG NO 44]

A) Peripheral cortex and inner medulla

B) Peripheral medulla and inner cortex

C) Peripheral epithelia and inner endothelia

D) Peripheral endothelia and inner epithelia

148 / 372

148) Correct statement about Leydig cells [NCERT PG NO 43]

A) Are present in seminiferous tubules and secrete androgens

B) Are present in interstitial space and secrete androgens

C) Are present in seminiferous tubules and help in maturation of sperms

D) Are present in interstitial space and help in maturation of sperms

149 / 372

149) Many pulses of daily use belong to one of the families below___?

A) Poceae

B) Fabaceae

C) Solanaceae

D) Liliaceae

150 / 372

150) Which of the following structure is absolute necessary for many biological activities of the protein ?

A) Secondary

B) Tertiary

C) Primary

D) All are absolute Necessary

151 / 372

151) Which one of the following techniques made it possible to genetically engineer living organisms?

A) Hybridization

B) Heavier isotope labelling

C) Recombinant DNA techniques

D) X-ray diffraction

152 / 372

152) In monerans & protistan , the parents cell divides by [NCERT PAGE NO 5]

A) Meiosis

B) First mitosis then meiosis

C) First meiosis then mitosis

D) Mitosis

153 / 372

153) In which of the following pollen grains have long ribbon like structure [NCERT PG NO 29]

A) Hydrilla

B) Zostera

C) Vallisneria

D) Water lily

154 / 372

154) Which one is highly selective ?

A) Active transport and passive transport

B) Active transport and facilitated diffusion

C) Simple diffusion and facilitated diffusion

D) Simple diffusion active transport

155 / 372

155) Seminal plasma is rich in which sugar? [NCERT PG NO 44]

A) Fructose

B) Glucose

C) Sucrose

D) Lactose

156 / 372

156)

A) C

B) B

C) A

D) D

157 / 372

157) Which of the following is correct ?

A) Smaller substances diffuse faster

B) Diffusion is rapid over short distance but extremely slow over long distance

C) All

D) Hydrophilic substance cannot pass through cell membrane due to lipid present in the cell membrane

158 / 372

158) Which is not a Cu releasing IUDs [NCERT PG NO 60]

A) Progestasert

B) Cu7

C) CuT

D) Multiload 375

159 / 372

159) Most critical event in sexual reproduction is [NCERT PG NO 14]

A) Gamete transfer

B) Fertilisation

C) Zygote formation

D) Gametogenesis

160 / 372

160) Plasma without clotting factor is called ?

A) Lymph

B) Tissue

C) Serum

D) Semen

161 / 372

161) The culturing of cells in liquid agitated medium is called ?

A) suspension culture

B) micro propagation

C) liquid culture

D) Agar culture

162 / 372

162) Pressure on plant cell wall caused by osmotic movement of water is called _______?

A) Tonic pressure

B) T. P.

C) O. P.

D) Hypertonic pressure

163 / 372

163) Genetic engineering is possible, because (NCERT XII:194)

A) we can cut DNA at specific sites by endonucleases like DNase I

B) the phenomenon of transduction in bacteria is well understood

C) restriction endonucleases purified from bacteria can be used in vitro

D) we can see DNA by electron microscope

164 / 372

164) The rate of biomass production is

A) Productivity

B) Respiration

C) Photosynthesis

D) Decomposition

165 / 372

165) Which of the following is not true of the carrier molecules involved in facilitated diffusion ?

A) They increase the speed of transport across a membrane

B) They concentrate solute molecules on one side of the membrane

C) They have specific binding sites for molecules they transport

D) Transport protein may undergo conformational change upon binding of solutes

166 / 372

166) The linking of antibiotic resistance gene with the plasmid vector became possible with __?

A) exonucleases

B) endonucleases

C) DNA ligase

D) DNA polymerase

167 / 372

167) Edible part of apple and pear is

A) Endocarp

B) Epicarp

C) Mesocarp

D) Thalamus

168 / 372

168) Which of the following methods for transporting substances across a membrane does not involve a change in shape of transport protein ______?

A) Na+ - K+ Pump

B) Facilitated diffusion

C) Active transport

D) Simple diffusion

169 / 372

169) Encysted amoeba divides by [NCERT PG NO 6]

A) Multiple fission

B) Both A & C

C) Binary fission

D) Budding

170 / 372

170) Which one of the following techniques made it possible to genetically engineer living organisms? (NCERT XII :194)

A) Heavier isotope labelling

B) X-ray diffraction

C) Hybridization

D) Recombinant DNA techniques

171 / 372

171) Select incorrect statements w.r.t anther[NCERT PG NO 21]

A) Microsporangia develop to become pollen sacs

B) Often a longitudinal groove runs widthwise separating the theca

C) Anther is bilobed & tetrathecous

D) Anther is a four sided (tetragonal)

172 / 372

172) The T-wave in an ECG represents ?

A) Depolarisation of ventricles

B) Electrical excitation of atria

C) Beginning of systole

D) Return of the ventricles from excited state

173 / 372

173) The linking of antibiotic resistance gene with the plasmid vector became possible with (NCERT XII:197)

A) exonucleases

B) DNA ligase

C) endonucleases

D) DNA polymerase

174 / 372

174) Restriction endonucleases are

A) used in genetic engineering

B) present in mammalian cells for degradation of DNA.

C) used for in vitro DNA synthesis

D) synthesized by bacteria

175 / 372

175) which of the following birth control measures can be considered as the most effective and reliable ?

A) Intra uterine devices

B) The rhythm method

C) Use of physical barriers

D) Sterilisation technique

176 / 372

176) ________________ Makes the uterus unsuitable for implantation and the cervix hostile to ____________

A) Hormone releasing IUD and ova

B) Sperms and ova

C) Hormone releasing IUD , sperms

D) Hormone releasing IUD, Spermatogonia

177 / 372

177) A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to ____?

A) Lerma Rojo

B) Sharbati Sonora

C) Basmati

D) Co-667

178 / 372

178) In the primary structure of the protein the left end is represented by ____?

A) First amino acid

B) Last amino acid

179 / 372

179) ഏതു മണ്ഡലത്തിൽ നിന്നാണ് ജോസഫ് മുണ്ടശ്ശേരി 1957ൽ കേരള നിയമസഭയിലേക്ക് തിരഞ്ഞെടുക്കപ്പെട്ടത്?
പരവൂർ മണലൂർ കോട്ടയം തൊടുപുഴ

A) തൊടുപുഴ

B) മണലൂർ

C) കോട്ടയം

D) പരവൂർ

180 / 372

180) In adult, each testis bears ____ compartments called testicular lobules. [NCERT PG NO 43]

A) 150

B) 250

C) 350

D) 500

181 / 372

181) Many pulses of daily use belong to one of the families below

A) Liliaceae

B) Poceae

C) Solanaceae

D) Fabaceae

182 / 372

182) A food web

A) Consist of a number of food chains interlinked at various tropic levels

B) Is more real than food chain

C) Provide a number of alternate food to consumers

D) All of the above

183 / 372

183) What will be the ploidy of nucellus , MMC, Functional megaspore & female gametophyte respectively [NCERT PG NO 26]

A) 2n , n , 2n , n

B) 2n, 2n , n , n

C) n , 2n , n , 2n

D) n , n , 2n , 2n

184 / 372

184) The two polypeptides of human insulin are linked together by (NCERT XII:211)

A) phosphodiester bond.

B) hydrogen bonds

C) covalent bond

D) disulphide bridges

185 / 372

185) Endospermic seeds are found in

A) Barley

B) Both a & b

C) Castor

D) Pea

186 / 372

186) It is an essential event in sexual reproduction .[NCERT PG NO 17, SUMMARY]

A) Gametogenesis

B) Transfer of male gamete

C) Zygote formation

D) Fertilisation

187 / 372

187) Embryo with more than 8 blastomeres formed due to in vitro fertilisation is transferred into [NCERT PG NO 64]

A) Fallopian tube

B) Uterus

C) Cervix

D) Vagina

188 / 372

188) All are plant derived elicitors except?

A) chitin

B) pectin

C) cellulose

D) pectic acid

189 / 372

189) Cellulose is a polymer of ?

A) Fructose

B) Glucose

C) Starch

D) Lipids

190 / 372

190) Stirred-tank bioreactors have been designed for (NCERT XII:204)

A) purification of the product

B) availability of oxygen throughout the process.

C) addition of preservatives to the product

D) ensuring anaerobic conditions in the culture vessel

191 / 372

191) ബാസൽ മിഷൻകാർ ഓട് ഫാക്ടറി സ്ഥാപിച്ചത് എവിടെ?

A) ആറ്റിങ്ങൽ

B) പുതിയറ

C) ജപ്പ്

D) തലശ്ശേരി

192 / 372

192) Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services?

A) Genetic Engineering Approval Committee

B) Indian Council of Agricultural Research

C) Research Committee on Genetic Manipulation

D) Bio-safety committee

193 / 372

193) Type of protein found in plasma is?

A) All of these

B) Fibrinogen

C) Globulin

D) Albumin

194 / 372

194) How many maximum molecules of O2 will be carry by 4 haemoglobin molecule ?

A) 9

B) 16

C) 6

D) 1

195 / 372

195) Integuments encircle the nucellus except at the [NCERT PG NO 25]

A) Micropyle

B) Chalaza

C) Funicle

D) Hilum

196 / 372

196) When does a concentration gradient exists ?

A) When solute concentration is high

B) When solute concentration are low

C) When members rupture

D) When solute concentration differ on either side of a membrane

197 / 372

197) Which Chambers of the heart that has thickest muscular wall ?

A) Left Atrium

B) Right Atrium

C) Right ventricle

D) Left ventricle

198 / 372

198) Human heart is ?

A) Digenic

B) Neurogenic

C) Cardiogenic

D) Myogenic

199 / 372

199) Binding of CO2 with Hb more in tissue when ?

A) pCO2 is high & pO2 is high

B) pCO2 is high & pO2 is low

C) pCO2 is low & pO2 is high

D) pCO2 is low & pO2 is low

200 / 372

200) Biolistics (gene-gun) is suitable for ___?

A) constructing recombinant DNA by joining with vectors

B) disarming pathogen vectors

C) transformation of plant cells

D) DNA fingerprinting.

201 / 372

201) The first clinical gene therapy was given for treating (NCERT XII:211)

A) chicken pox

B) rheumatoid arthritis

C) adenosine deaminase deficiency.

D) diabetes mellitus

202 / 372

202) ചുവടെ പറയുന്ന പ്രസ്താവനകളിൽ തെറ്റായ പ്രസ്താവന തിരഞ്ഞെടുക്കുക?

A) CFC കണ്ടുപിടിച്ചത് തോമസ് മിഡ്ഗലെ

B) മൊണ്ട്രിയൽ പ്രോട്ടോക്കോൾ നിലവിൽ വന്നത് 1987sep 16

C) ഇന്ത്യയിൽ വായു മലിനീകരണം കുറയ്ക്കുന്നതിനായി നീതി ആയോഗ് തയ്യാറാക്കിയ 15 ഇന കർമ്മപദ്ധതി ബ്രീത്ത് ഇന്ത്യ

D) ക്യോട്ടോ പ്രോട്ടോക്കോൾ വിളംബരം ചെയ്യപ്പെട്ടത് 1997 dec 11

203 / 372

203) Facilitated diffusion _________?

A) Is an active process

B) Needs ATP

C) Occurs against the concentration gradient

D) Needs a carier protein

204 / 372

204) The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of (NCERT XII:200)

A) insertional inactivation of alpha galactosidase in recombinant bacteria

B) insertional inactivation of alpha galactosidase in non-recombinant bacteria.

C) inactivation of glycosidase enzyme in recombinant bacteria

D) non-recombinant bacteria containing beta galactosidase

205 / 372

205) Open circulatory system is present in ?

A) Chordates

B) Annelids

C) Arthropod and molluscs

D) Humans

206 / 372

206) The two components of an ecosystem are

A) Plants and animals

B) Weeds, trees, animals and man

C) Biotic and abiotic

D) Energy flow and mineral cycling

207 / 372

207) Protein is a ..............

A) Homoploymer

B) Heteropolymer

208 / 372

208) During systole of heart ?

A) Only atria contracts

B) Only ventricles contract

C) Atria and ventricles contract separately

D) Atria and ventricles contract simultaneously

209 / 372

209) The goal of teaching is ?

A) to give information

B) Desirable change in behavior

C) To impart knowledge

D) To involve pupils in activities

210 / 372

210) With reference to solo taxonomy one aspect of a task is understood in ?

A) Multistructural level

B) Extended abstract level

C) Rational level

D) Unistructural level

211 / 372

211) Within the heart AV node is found at ?

A) Upper right corner of left Atrium

B) Lower left corner of left Atrium

C) Lower left corner of right Atrium

D) upper right corner of right Atrium

212 / 372

212) Plant biotechnology involves ?

A) rapid clonal multiplication of desired genotypes

B) production of virus free plants

C) production of valuable products in plants

D) all of these

213 / 372

213) Opening of the right ventricle into Pulmonary artery and that of left ventricle into the aorta is provided with ?

A) Bicuspid valve

B) Mitral valve

C) Semilunar valve

D) Tricuspid valve

214 / 372

214) The process which refers to development of embryo is called ?

A) Embryogenesis

B) Oogenesis

C) Parthenogenesis

D) Gametogenesis

215 / 372

215) SOLO stands for ..........

A) System of the observed learning output

B) structure of the observed learning output

C) System of the observed learning outcome

D) Structure of the observed learning outcome

216 / 372

216) Strobilanthus kunthiana is found in [NCERT PG NO 9]

A) Southern India

B) Western india

C) Eastern india

D) Northern India

217 / 372

217) Pollen grains are mature when [NCERT PG NO 23]

A) It contains one haploid cells

B) Both A & C

C) It contains vegetative cell & genetative cell

D) It contains two diploid cells

218 / 372

218) Which of the following is non-medicated IUDs [NCERT PG NO 60]

A) Lippes loop

B) Multiload 375

C) Progestasert

D) LNG 20

219 / 372

219) Enzyme , Carbonic anhydrase is present in ____ ?

A) RBC

B) Bicarbonate

C) Plasma

D) RBC & Plasma

220 / 372

220) Who play an important role in guiding the pollen tubes to enter the embryo sac [NCERT PG NO 27]

A) Synergids

B) Mircropylar end

C) Filiform apparatus

D) Egg cell

221 / 372

221) Climate community is

A) Final biotic community

B) All of the above

C) Stable

D) Self perpetuating

222 / 372

222) O. P. of pure water is ______?

A) 100

B) 10

C) 1

D) 0

223 / 372

223) കേരളത്തിൽ ജന്മി സമ്പ്രദായം നിർത്തലാക്കൽ പ്രാബല്യത്തിൽ വന്ന വർ?

A) 1967

B) 1970

C) 1963

D) 1957

224 / 372

224) if husband is Rh+ when wife is Rh- negative then................?

1) No problem with first child
2) Second child would have anaemia ( erythroblastosis foetalis )
3) Second child would be normal
4) Both 1 and 2

A) 1 & 2

B) 2 Only

C) 3 & 2

D) 1 Only

225 / 372

225) What is true about ecosystem

A) Primary consumer out - number producers

B) Primary consumers are at least dependent on producers

C) Secondary consumers are the largest and powerful

D) Producers are more than primary consumers

226 / 372

226) The bond between phosphate and hydroxyl group of sugar is called______?

A) Hydrogen bond

B) Glycosidic bond

C) Ester bond

D) Peptide bond

227 / 372

227) Oxygen Hb dissociation curve is ?

A) Hyperbola

B) U shaped

C) Parabola

D) Sigmoid

228 / 372

228) Choose the correct pair from the following?

A) Ligases - Join the two DNA molecules

B) Exonucleases - Make cuts at specific positions within DNA

C) Nucleases - Separate the two strands of DNA

D) Polymerases - Break the DNA into fragments

229 / 372

229) A watermelon has how much water ?

A) 5 litres

B) 100 %

C) About 10 to 15 %

D) More than 92 %

230 / 372

230) Which does not affect the rate of diffusion of a substance ______?

A) Temperature and concentration gradient

B) Molecular diameter of the diffusing materials

C) Presence of the other substances in the solution

D) Electrical charges of the diffusing materials

231 / 372

231)

Endospermic seeds are found in ?
1 -Barley
2- Castor
3- Pea
4- Both a & b

A) 2

B) 1

C) 4

D) 3

232 / 372

232) When does plant take decisions to flower? [NCERT PG NO 20]

A) All of these

B) Much before the actual flower is seen on a plant

C) During the appearance of flower buds

D) In embryonic development

233 / 372

233) Haemoglobin is a ___________ coloured ________ containing pigment ?

A) Orange , Cu

B) Pink , Fe

C) Red , Fe

D) Red , Cu

234 / 372

234) Biotic components refer to

A) Living organisms

B) Fossil fuels

C) Gases produced by industries

D) Nutrient deficient soil

235 / 372

235) Venation is term used to describe the pattern of arrangement of ?

A) Formal organs

B) Flower in inflorescence

C) Veins and veinlets in a lamina

D) All of them

236 / 372

236) Which of the following is inorganic co factor ?

A) Zinc

B) Heme

C) Cadmium

D) Both 2 and 3

237 / 372

237) Maximum number of existing transgenic animals is of (NCERT XII:212)

A) cow

B) fish

C) pig.

D) mice

238 / 372

238) In teaching experienced members guide the immature one’s for.............

A) Spending time

B) Quality of life

C) Adjustment of life

D) Qualification

239 / 372

239) Which of the following event is post fertilisation event ?

A) Gamete transfer

B) Fertilisation

C) Gametogenesis

D) Embryogenesis

240 / 372

240) In plant succession when climax community is reached,the net productivity

A) Becomes reduced

B) Becomes stable

C) Becomes zero

D) Continues to increase

241 / 372

241) If a pressure greater than atmospheric pressure is applied to pure water or solution, it's water potential __?

A) First increase and then become zero

B) Increases

C) Remains the same

D) Decreases

242 / 372

242) The testes are situated ____ the abdominal cavity within a pouch called ____. [NCERT PG NO 43]

A) inside, testicular lobules

B) outside, scrotum

C) outside, vas deferens

D) inside, scrotum

243 / 372

243) The offspring produced through which of the following process are not exactly similar to their parents ?

A) Ameiotic thelytoky

B) Asexual reproduction

C) Sexual reproduction

D) Parthenogenesis

244 / 372

244) ലോകത്തിൽ ഏറ്റവും കൂടുതൽ ഹരിത ഗൃഹവാതകം പുറന്തള്ളുന്ന രാജ്യം?

A) ഇന്ത്യ

B) ജപ്പാൻ

C) അമേരിക്ക

D) ചൈന

245 / 372

245) The blood returning to the heart from lungs via pulmonary vein has more ?

A) Nutrient per ml of blood

B) Hemoglobin per ml of blood

C) Oxygen per ml of blood

D) RBC per ml of blood

246 / 372

246) Which of the following statement is incorrect ?

A) Animals are either unisexual or bisexual

B) Asexual reproduction is a rapid mode of reproduction

C) The life spans of organisms are correlated with their sizes

D) Embryogenesis involves cell division and cell differentiation

247 / 372

247) Blood consists of ?

A) All of Above

B) Fluid Matrix

C) Formed Elements

D) Plasma

248 / 372

248) detritus food chain starts from

A) None of the above

B) Dead organic matter

C) Zooplanktons

D) Green plants

249 / 372

249) The term ecosystem was coined by

A) E Haeckel

B) EP odum

C) E Warming

D) AG Tansley

250 / 372

250) Which plant do not show clear cut vegetative, reproductive and senescent phase [NCERT PG NO 9]

A) Annual

B) Both A & B

C) Perennial

D) Biennial

251 / 372

251) A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using ?

A) EcoRI

B) polymerase III

C) Taq polymerase

D) ligase

252 / 372

252) Which of the following is not a producer

A) Nostoc

B) Volvox

C) Spirogyra

D) Agaricus

253 / 372

253) Which constitute the female accessory ducts [NCERT PG NO 45]

A) Fallopian tube + uterus + cervix + vagina

B) Oviduct + uterus + vagina

C) Fallopian tube + uterus + vagina

D) Oviduct + uterus + cervix

254 / 372

254) In ecological Pyramid ,the base always represents the ....... and the apex represents.....

A) Top level consumers,producers

B) Producers, primary consumers

C) Producers, secondary consumers

D) Producers,top level consumers

255 / 372

255) Heart beat can be initiated by ?

A) Atrio-ventricular node

B) Sodium ion

C) Sino-auricular node

D) Purkinje's fibers

256 / 372

256) In a biotic community, the primary consumers in the ecosystem are

A) Omnivores

B) Herbivores

C) Carnivores

D) Detritivores

257 / 372

257) What is antisense technology ___?

A) A cell displaying a foreign antigen used for synthesis of antigens

B) RNA polymerase producing DNA

C) Production of somaclonal variants in tissue cultures

D) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene

258 / 372

258) A detritivore is

A) A plant feeding on an animal

B) Animal feeding on plant matter

C) Animal feeding on another animal

D) Animal feeding on dead and decaying organic matter

259 / 372

259) Energy storage at the consumer level is called

A) Secondary productivity

B) Net primary productivity

C) Net productivity

D) Gross primary productivity

260 / 372

260) Water channel consists of how many type of aquaporins ?

A) 28

B) 8

C) 18

D) 88

261 / 372

261) What would be Ψp of a fully flaccid cell ?

A) -3

B) +3

C) +2

D) 0

262 / 372

262) Plasmid has been used as vector because __?

A) it has antibiotic resistance gene.

B) it is circular DNA which have capacity to join to eukaryotic DNA

C) it can move between prokaryotic and eukaryotic cells

D) both ends show replication

263 / 372

263) The lengthwise running groove on another which separate theca is called

A) Rupture line

B) All of these

C) Suture of anther

D) Line of dehiscence

264 / 372

264) The largest part of the fallopian tube is [NCERT PG NO 44]

A) Cervical canal

B) Ampulla

C) Isthmus

D) Infundibulum

265 / 372

265) The external opening of urethra is called [NCERT PG NO 43]

A) Urethral ductis

B) Urethral meatus

C) Urinary tract

D) Urinary bladder

266 / 372

266) എവിടെയാണ് പി കൃഷ്ണപിള്ള ജനിച്ചത്?

A) വൈക്കം

B) പുന്നപ്ര

C) കൊല്ലം

D) മുഹമ്മ

267 / 372

267) Which of the following plant is used to extract the blue dye

A) Indigofera

B) Lupin

C) Trifolium

D) Cassia

268 / 372

268) In humans, the sex of the baby is determined:

A) At the time of implantation and by the father

B) At the time of fertilization and by the mother

C) At the time of implantation and by the mother

D) At the time of fertilization and by the father

269 / 372

269) An example of protein with quaternary structure is ____ ?

A) Keratin

B) All of above

C) Hemoglobin

D) Myoglobin

270 / 372

270) Release of sperm from seminiferous tubule is known as [NCERT PG NO 47]

A) Spermiation

B) Spermiogenesis

C) Spermatogenesis

D) Stimulation

271 / 372

271) Edible part of apple and pear is___?

A) Thalamus

B) Mesocarp

C) Epicarp

D) Endocarp

272 / 372

272) Non protein constituent which bound to enzymes catalytically more active are called ?

A) Cofactor

B) Co ions

C) Competitive inhibitor

D) Inhibitor

273 / 372

273) The placenta is attached to the developing seed near the?

A) Testa

B) Micropyle

C) Hilum

D) Chalaza

274 / 372

274) Most commonly used body fluid ?

A) Limph

B) Serum

C) Plasma

D) Blood

275 / 372

275) The relation between producers and consumers in an ecosystem can be graphically represented in the form of a pyramid called

A) Ecological Pyramid

B) Pyramid of biomass

C) Tropic level

D) Pi chart

276 / 372

276) Select incorrect statements regarding water hyacinth. [ NCERT PG NO 8]

A) Grow in running water

B) Most invasive weeds

C) Known as terror of bengal

D) Drains oxygen from water

277 / 372

277) How many microsporangia are located in the corners of a typical bilobed anther of angiosperm ? [NCERT], [KCET 2021]

A) 2

B) 1

C) 4

D) 8

278 / 372

278) Roots developed from the parts of the plants other than radicle are called___?

A) Nodular roots

B) Tap roots

C) Fiberous roots

D) Adventitious roots

279 / 372

279) Endosperm a product of double fertilisation in angiosperms is absent the seeds of

A) Orchids

B) Maize

C) Coconut

D) Castor

280 / 372

280) In gel electrophoresis, separated DNA fragments can be visualized with the help of ?

A) acetocarmine in UV radiation

B) acetocarmine in bright blue light

C) ethidium bromide in UV radiation

D) ethidium bromide in infrared radiation.

281 / 372

281) The tendency of water to move towards greater solute concentration is the example of ______?

A) Diffusion

B) Active transport

C) Osmolarity

D) Passive transport

282 / 372

282) Each cell of sporogenous tissue is a [NCERT PG NO 22]

A) All of these

B) MMC

C) Potential pollen

D) PMC

283 / 372

283) Contraction of right ventricle pumps blood into ?

A) Pulmonary vein

B) Pulmonary artery

C) Dorsal aorta

D) Coronary artery

284 / 372

284) Inulin is a Polymer of ?

A) Cellulose

B) Fructose

C) Glucose

D) Starch

285 / 372

285) Which of the following is not a component of downstream processing?

A) Separation

B) Expression

C) Preservation

D) Purification

286 / 372

286) Isogametes of [NCERT PG NO 10, FIG 1.5]

A) Both A & B

B) Homosapiens

C) Fucus

D) Cladophora

287 / 372

287) Water potential gradient is ___?

A) The overall movements of solutes

B) Pressure gradient minus water potential

C) The evaporation of water from the leaves

D) The overall movements of water

288 / 372

288) Each Ovary is connected to the pelvic wall and the uterus by: [NCERT PG NO 44 ]

A) Adipose tissue

B) Ligaments

C) Peritoneum

D) Areolar tissue

289 / 372

289) The ovaries are located [ NCERT PG NO 44]

A) One on each side of the lower abdomen

B) One on each side of the upper abdomen

C) Two on each side of the upper abdomen

D) Two on each side of the lower abdomen

290 / 372

290) Systemic heart refers to ?

A) Entire heart in lower vertebrates

B) The two ventricles together in humans

C) Left auricle and left ventricle in higher vertebrates

D) The heart that contracts under stimulation from nervous system

291 / 372

291) Which neural signal decreases the heart rate and thereby the cardiac output ?

A) Sympathetic nervous system

B) Both above

C) Parasympathetic neural system

292 / 372

292) When a plasmolysed cell is placed in water or hypotonic solution, what happens ?

A) T. P. of cell becomes zero

B) Water potential of cell decreases

C) T. P. of cell decreases

D) T. P. Increases

293 / 372

293) Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called ?

A) bio-infringement

B) bioexploitation.

C) biopiracy

D) biodegradation

294 / 372

294) Seeds when soaked in water, they imbibe it because of ___?

A) DPD of seed is very much low

B) O. P. inside the seed is low

C) Water potential gradient between the seed coat and water

D) OP of water is high

295 / 372

295) When a large amount of water enters a plant cell, what happens ___?

A) Entry of water makes Ψw of cell more negative

B) Entry of water reduces the T. P.

C) Entry of water increases as the water potential increases

D) Entry of water is opposed by T. P.

296 / 372

296) Which is largest among the given lymphocytes?

A) Lymphocytes

B) Monocytes

C) Basophils

D) Eosinophils

297 / 372

297) Heart is derived from ?

A) All of these

B) Ectoderm

C) Endoderm

D) Mesoderm

298 / 372

298) ആത്മകഥക്ക് ഒരു ആമുഖം ഇതു ആരുടെ ആത്മകഥയാണ്?

A) പ്രൊഫ ലീലാവതി

B) ലളിതoബിക അന്തർജനം

C) അരുന്ധതി റോയ്

D) സുഗതകുമാരി

299 / 372

299) The rules of presenting the contents to make them easy are called ?

A) Techniques of teaching

B) Method of teaching

C) Maxims of teaching

D) Teaching strategies

300 / 372

300) The nature of climax community ultimately depends on

A) Climate

B) Soil organisms

C) Bed rock

D) Pool of available nutrients

301 / 372

301) The volume of blood that enters into the aorta with each ventricular systole is called ?

A) Vital capacity

B) Cardiac cycle

C) Cardiac output

D) Stroke volume

302 / 372

302) Imbibition causes ___?

A) Volume of imbibant increases and pressure develops

B) Increase in the volume of imbibant but no pressure development

C) No change in volume of imbibant but pressure develops

D) Decrease in the volume of imbibant and pressure develops

303 / 372

303) Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein___?

A) binds with epithelial cells of midgut of the insect pest ultimately killing it

B) is activated by acid pH of the foregut of the insect pest

C) does not kill the carrier bacterium which is itself resistant to this toxin.

D) is coded by several genes including the gene cry

304 / 372

304) Exchange of gases nutrient sector between the fluid and the cells take place through ?

A) RBC

B) Serum

C) WBC

D) Interstitial fluid

305 / 372

305) Confirmatory test for STDs is [NCERT]

A) ELISA

B) DNA hybridisation

C) All of these

D) PCR

306 / 372

306) Vertical distribution of different species occupying different levels in a biotic community is known as

A) Stratification

B) Zonation

C) Divergence

D) Pyramid

307 / 372

307) Nearly 70% CO2 absorbed by blood will be transported to the lungs ?

A) As Bicarbonate ions

B) By Plasma

C) By RBC

D) As carbamino haemoglobin

308 / 372

308) Which cell secrete testicular hormones [NCERT PG NO 43]

A) Sertoli cells

B) Spermatogonia

C) Leydig cells

D) Germ cells

309 / 372

309) Biomolecules are present in certain concentrations expressed as______?

A) Mols/litre

B) Moles/cell

C) mmol/Litre

D) All of these

310 / 372

310) When more than 1 pistil fused together , it is said to be [NCERT PG NO 24]

A) Apocarpous

B) Multicarpellary

C) Syncarpous

D) Monocarpellary

311 / 372

311)

Flowers require synchrony in pollen release and stigma receptivity in [NCERT PG NO 27]

A) Geitonogamy

B) Apogamy

C) Autogamy

D) Xenogamy

312 / 372

312) Leucocytes are colorless due to ?

A) Lack of water

B) Lack of hemoglobin

C) Presence of Ca+2 ions

D) Presence of white colour pigments

313 / 372

313) Transport proteins that simultaneously move two molecules across a membrane in the same direction are called ?

A) Uniport

B) Antiport

C) Symport

D) Diffusive ports

314 / 372

314) Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes? (NCERT XII:200)

A) Retrovirus

B) Ti plasmid

C) pBR322

D) λ phage

315 / 372

315) Primary productivity depends upon

A) Availability of nutrients

B) Both a& b

C) None of these

D) Photosynthetic capacity of plants

316 / 372

316) External fertilisation occurs in

A) Bony fishes

B) Mammals

C) Birds

D) Reptiles

317 / 372

317) During parturition, the fetal ejection reflex triggers the release of:

A) A decreasing amount of estrogen and an increasing amount of progesterone from the placenta

B) GnRH from the fetal hypothalamus

C) An increasing amount of estrogen and a decreasing amount of progesterone from the placenta

D) Oxytocin in from the maternal pituitary

318 / 372

318) Water tends to move into a cell that has ____?

A) High positive Ψw

B) High T. P.

C) Low T. P.

D) More negative Ψw

319 / 372

319) Restriction endonucleases are

A) used in genetic engineering

B) present in mammalian cells for degradation of DNA.

C) synthesized by bacteria

D) used for in vitro DNA synthesis

320 / 372

320) The primary oocyte completes the first meiotic division [NCERT PG NO 49]

A) In the fetal life

B) Prior to ovulation

C) After ovulation

D) After fertilisation

321 / 372

321) Enzymes can have ?

A) All of the these

B) Secondary structure

C) Primary structure

D) Tertiary structure

322 / 372

322) The primary female sex organs are located

A) At a time only one side of lower abdomen

B) At a time only one side of upper abdomen

C) One on each side of upper abdomen

D) One on each side of lower abdomen

323 / 372

323) Venation is term used to describe the pattern of arrangement of

A) Veins and veinlets in a lamina

B) Flower in inflorescence

C) All of them

D) Floral organs

324 / 372

324) Immobilized cell bioreactors are based on........

A) cells entrapped in gels

B) cells cultures in solid medium

C) cells cultured in liquid medium

D) all of these

325 / 372

325) Transport of organic and inorganic materials is ?

A) Multidirectional

B) Bidirectional

C) First unidirectional then bidirectional

D) Unidirectional

326 / 372

326) ബോൺ കൺവെൻഷൻ നടന്ന വർഷം?

A) 1989

B) 1982

C) 2013

D) 1979

327 / 372

327) The distal end of the filament is attached to [NCERT BASED]

A) Thalamus only

B) Anther

C) Sepals

D) Thalamus and petal

328 / 372

328) Chordae tendineae are found in ?

A) Atria of heart

B) Ventricles of heart

C) Ventricles of brain

D) Joints

329 / 372

329) Pollen grains are well preserved as fossils because of presence of [NCERT PG NO 23]

A) Facinating array of patterns & design

B) Pollen potential

C) Pollen kit

D) Sporopollenin

330 / 372

330) Which one of the following is not the function of placenta?

A) Secretes oxytocin during parturition

B) Secretes oestrogen

C) Facilitates supply of oxygen and nutrients to embryo

D) Facilitates removal of carbon dioxide and waste material from embryo

331 / 372

331) All are bisexual/monoecious species except [NCERT PG NO 12 , FIG 1.6]

A) Sweet potato

B) Marchantia

C) Chara

D) Cucurbits

332 / 372

332) The pressure exerted by the protoplasts due to entry of water against the rigid wall is called __?

A) Osmotic potential

B) Water potential

C) Pressure potential

D) Solute potential

333 / 372

333) Batch cultures are type of suspension culture where ?

A) medium is continuously replaced

B) no depletion of medium occurs

C) medium is loaded only at the beginning

D) cellular wastes are continuously removed and replaced

334 / 372

334) Plant absorbents consists of ___?

A) Hydrophobic colloid

B) Cellulose and pectin

C) Hydrophilic colloids

D) Lignin like chemical

335 / 372

335) lymph is an important carrier for the transport of ?

A) Hormones

B) Both 1 and 2

C) Nutrients

336 / 372

336) The mineral distribution in tissue fluid is similar to that in?

A) Blood

B) None of these

C) Serum

D) Plasma

337 / 372

337) Genetic engineering is possible, because ___?

A) the phenomenon of transduction in bacteria is well understood

B) restriction endonucleases purified from bacteria can be used in vitro

C) we can see DNA by electron microscope

D) we can cut DNA at specific sites by endonucleases like DNase I

338 / 372

338) Cybrids are

A) nuclear hybrids

B) cytoplasmic hybrids

C) hybrid plants derived from cross pollination

D) cytological hybrids

339 / 372

339) Which of the following sexually transmitted diseases is not completely curable ? [NEET 2019]

A) Genital herpes

B) Chlamydiasis

C) Genital warts

D) Gonorrhoea

340 / 372

340) Which one of the following is now being commercially produced by biotechnological procedures? (NCERT XII:211)

A) Morphine

B) Insulin

C) Nicotine

D) Quinine

341 / 372

The modification of exogenous compounds by plant cells is called
a) Biotransformation

341) b) bioconversion

c) both a and b

d) biophytomodification

A) A

B) B

C) C

D) D

342 / 372

342) Humans are ____ and ____ organisms. [ NCERT PG NO 42]

A) Sexually reproducing, viviparous

B) Asexually reproducing, oviparous

C) Sexually reproducing, oviparous

D) Asexually reproducing, viviparous

343 / 372

343) An inverted pyramid of biomass can be found in which ecosystem

A) Tundra

B) Forest

C) Grassland

D) Marine

344 / 372

344) Syngenesious condition of stamen is found in family?

A) Asteraceae

B) Cruciferae

C) Malvaceae

D) Liliaceae

345 / 372

345) Process of Plasmolysis is __?

A) Always reversible

B) Always irreversible

C) Rarely reversible

D) Usually reversible

346 / 372

346) Centre of each microsporangium is occupied by [NCERT PG NO 21]

A) Central tissue

B) Sporogenous tissue

C) Tapetum

D) Microspore mother cell

347 / 372

347) In a pond ecosystem, the autotrophic components are

A) Phytoplankton

B) Submerged and marginal plants

C) Algae

D) All of the above

348 / 372

348) SOLO taxonomy consists of levels?

A) 4

B) 8

C) 6

D) 2

349 / 372

349) In a polysaccharide Chain Right end is called the ?

A) Reducing end

B) Non reducing end

350 / 372

350) (a) Pioneer community is the final biotic community that develops in an area

(b) Pioneer community is soon replaced by the next seral community during on going succession

A) (a) false,(b) true

B) (a) & (b) false

C) (a) true,( b) false

D) (a)& (b) true

351 / 372

351) In plants cell which ones are important determinants of movement of molecules in or out of the cell ___?

A) Cell wall + cell membrane

B) Tonoplasts + Vacuolar membrane

C) Tonoplast + cell membrane

D) Cell wall + Tonoplasts

352 / 372

352) The entire sequence of communities that successively changes in a given area are called

A) Pioneer

B) Xerarch

C) Climax

D) Sere

353 / 372

353) Endosperm a product of double fertilisation in angiosperms is absent the seeds of____?

A) Orchids

B) Casto

C) Coconut

D) Maize

354 / 372

354) Syngenesious condition of stamen is found in family ?

A) Liliaceae

B) Asteraceae

C) Cruciferae

D) Malvaceae

355 / 372

355) Difference between ZIFT and IUT lies in the

A) Number of cells

B) Methodology

C) Nature of sperms

D) Nature of cells

356 / 372

356) Erythroblastosis fortalis can happen if mother and father are respectively ?

A) Do not depends on Rh factor

B) Rh -ve and Rh +ve

C) Any of above conditions

D) Rh+ve and Rh -ve

357 / 372

357) Atretic follicles are found in the

A) Fallopian tubes

B) Uterus

C) Ovary

D) Labia majora

358 / 372

358) In RNAi, the genes are silenced using (NCERT XII:209)

A) ss-RNA

B) ss-DNA

C) ds-DNA.

D) ds-RNA

359 / 372

359) Which statement characterizes a hypotonic solution ?

A) The solution has a greater solute concentration that the one it is being compared to.

B) The solution has equal solute concentration to one it's is being compared to.

C) None of these

D) The solution has a lesser solute concentration that one it is being compared to

360 / 372

360) നാനോ മിഷൻ ആരംഭിച്ച വർഷം?

A) 2007

B) 2010

C) 2008

D) 2012

361 / 372

361) Human insulin is being commercially produced from a transgenic species of __?

A) Saccharomyces

B) Mycobacterium

C) Rhizobium

D) Escherichia

362 / 372

362) Which one of the following is now being commercially produced by biotechnological procedures ___?

A) Nicotine

B) Morphine

C) Insulin

D) Quinine

363 / 372

363) Which is the hormonal method of birth control

A) Vasectomy

B) Pill

C) IUD

D) Femidon

364 / 372

364) Water potential of imbibants is___?

A) Highly positive

B) Zero

C) Always possible

D) Highly negative

365 / 372

365) The most common solidifying agent used in micropropagation is ............?

A) dextran

B) agar

C) all of these

D) Mannan

366 / 372

366) Which of the following depicts the correct pathway of transport of sperms [NEET 2016]

A) Efferent ductules➡️Rete testis➡️vas deferens➡️Epididymis

B) Rete testis➡️Epididymis➡️Efferent ductules➡️vas deferens

C) Rete testis➡️vas deferens➡️ Efferent ductules➡️Epididymis

D) Rete testis➡️Efferent ductules ➡️Epididymis➡️vas deferens

367 / 372

367) Which statement about the membrane channel is not true ?

A) Movement through them is along the concentration gradient

B) They are proteins

C) All ions pass through the same type of channel

D) They are pores in the membrane

368 / 372

368) Which relationship is considered correct for a solution ____?

A) Ψw = Ψs

B) Ψs = Ψw + Ψp

C) Ψw = Ψs + Ψp

D) Ψp = Ψw

369 / 372

369) Region outside the seminiferous tubule is called

A) Blind space

B) Interdigital space

C) Interstitial space

D) Interferous space

370 / 372

370) Apporoxima 97% O2 absorbed by blood is transported to the body tissue ?

A) As Bicarbonate ions

B) By RBC

C) Through Plasma

D) All of these

371 / 372

371) Nearly ______________ MTPs are performed in a year all of the world which accounts to _________ of the total number of conceived pregnancies in a year [NCERT PG NO 62]

A) 45 to 50 lacs , 1/10th

B) 40 to 55 lacs , 1/5th

C) 45 to 50 million , 1/5th

D) 40 to 55 million , 1/10th

372 / 372

372) Platelets are ?

A) All of these

B) Also called thrombocytes

C) Produced from megakaryocytes

D) Cell fragments

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