Max. Mark : 360
Time :1.30 Min.
Subject: Biology
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This Booklet contains 08 Pages.
NTA MODEL PAPER-2
NEET 2020 Test Booklet Code P
P
NTA MODEL PAPER-2 2 TEST BOOKLET CODE - P
.1. The embryogenesis is the process of development of
embryo from the zygote. During this process zygote
undergoes
(1) Meiosis
(2) Cleavage only
(3) Cell differentiation only
(4) Both cleavage and cell diff34rentiation
02. Most diverse macromolecules, found in the cell both
physically and chemically are
(1) Proteins (2) Carbohydrates
(3) Nucleic acids (4) Lipids
03. The element which helps in oxygen evolution in the
process of photosynthesis is
(1) Zn and Mn (2) Mo and Cl
(3) B and Mg (4) Cl and Mn
04. Although much carbon dioxide is carried in the blood,
yet bloods does not become acidic because
(1) Co2 is continuously diffused through the tissues and
is not allowed to accumulate
(2) Co2 combines with water to form H2Co3 which is
neutralized by Na2 co3
(3) in Co2 transport, blood buffers play an important
role
(4) Co2 is absorbed by leucocytes
05. The science of rearing, feeding, care, breeding and
utilization of animals is called
(1) Poultry
(2) Veterinary science
(3) Animal husbandry
(4) Dairy science
06. Which of the following statement is correct regarding
blood pressure?
(1) 130/90 mm Hg is considered high and requires
treatment
(2) 10/55 mm Hg is considered an ideal blood pressure
(3) 105/50 mm Hg makes one very active
(4) 190/110 mm Hg may harm vital organs like brain
and kidney
07. If the base sequence in one chain of DNA I GCATG,
what shall be the sequence in the replicated
complementary strand
(1) GCATG (2) CGTAC
(3) ATGCG (4) GCATC
08. Collar cells form the lining of spongocoel in
(1) Jelly fish (2) Sycon
(3) Taenia (4) Pila
09. Chose the option that is showing the correct sequence
of events occurring in each cycle of polymerase chain
reaction (PCR).
(1) Denaturation, extension, primer annealing.
(2) Primer annealing, denaturation, extension.
(3) Denaturation, Primer annealing, extension.
(4) Extension, Primer annealing, denaturation.
10. In which of the reactions of the following reactions of
glycolysis, a molecule of water is removed from the
substrate?
(1) Fructose-6-phosphate Fructose-1,6-bisphosphate
(2) 3-phosphate-glyceraldehde 1,3bisphosphoglycric acid
(3) PEP pyruvic acid
(4) 2-phosphoglycerate PEP
11. The cell junctions called tight, adhering and gap
junctions are found in
(1) Muscular tissue
(2) Connective tissue
(3) Epithelial tissue
(4) Neural tissue
12. Which one of the following is not included under Insitu
conservation?
(1) Botanical garden
(2) Biosphere reserve
(3) National Park
(4) Sanctuary
13. A new crop, that is the source of a high performance
lubricants is
(1) Simmondsia chinensis
(2) Parthenium argentatum
(3) Psophocarpus tetragonolobus
(4) Leucaena leucocephala
14. The term test-tube baby implies that
(1) Fertilization of ovum takes place in uterus but
develops in the test-tube
(2) Fertilization of ovum takes place in the test-tube
and develops in test-tube itself
(3) Fertilization of ovum takes place in test-tube but it
develops in the uterus
(4) Fertilization of ovum takes place in the test-tube
and embryo develops in the uterus
15. With respect to the sodium-potassium pump, what
changes will be observe when one molecule of ATP is
used during the process?
(1) 3 ions of Na+ are pumped out and 2 K+ are taken
in
(2) 3 ions of Na+ are taken in and 2k+ are pumped out
(3) 2 ions of Na+ are thrown out and 3K+ are absorbed
(4) 3 ions of k+ are absorbed, 3Na+ are pumped out
16. Which of the following soil bacterium produces a
protein/chemical that is toxic to insect pests?
(1) Proteobacteria
(2) Bacillus thruingiensis
(3) Spirochaetes
(4) Trichoderma
17. What sarcomere?
(1) Part between two H-lines
(2) Part between two A- lines
(3) Part between two I-bands
(4) Part between two Z-lines
18. The site of ADA production in the body is
(1) Neutrophils (2) Lymphocytes
(3) Blood plasma (4) Monocytes
NTA MODEL PAPER-2 3 TEST BOOKLET CODE - P
19. Which one of the following utilize molecular nitrogen
(N2) as a nutrient for growth?
(1) Rhizobium (2) Spirogyra
(3) Mucor (4) Methanococcus
20. Tobacco and Petunia belong to the family
(1) Poaceae (2) Fabaceae
(3) Solanaceae (4) Brassicaceae
21. In lichens, sexual reproduction belongs to
(1) Fungal partner only
(2) Alga partner only
(3) Both Fungal and algal partners
(4) Neither fungal or algal partner
22. If Cowper’s glands are removed, it will affect
(1) Erection of penis
(2) Sperm
(3) Sex recognition
(4) Sexual behaviour
23. In Pteridophytes, meiosis occurs in
(1) Egg (2) Zygote
(3) Antherozoids (4) Spore mother cells
24. Which of the following pairs is wrongly matched?
(1) Yeast- ethanol
(2) Streptomycetes – Antibiotic
(3) Coliforms – Vinegar
(4) Methanogens – gobar gas.
25. Identify the parts labelled P, Q, R, and S, and select
the right option about them.
Part-(P) Part-(Q) Part-(R) Part-(S)
A. Epidermis Endothecium Microspore
mother cells
Middle
layer
B. Epidermis Endothecium Middle layer Microspore
mother cell
C. Endothecium Epidermis Microspore
mother cells
Middle
layer
(1) A (2) B
(3) C (4) D
26. Which one of the following is the product of the dark
reaction photosynthesis?
(1) CO2
(2) ATP
(3) Pyruvic acid
(4) Phosphoglyceraldehyde
27. Which one of the following would occur during bolting?
(1) Uptake of water
(2) Elongation of internodes
(3) Uptake of mineral salts
(4) Extension of lamina
28. Which of the following is not a c9mponent of saliva?
(1) Saliva contains electrolytes Na+, K+, Cl- and HCO3 – ions.
(2) Ptyalin salivary amylase
(3) Mucin, lysozyme and thiocyanate ions
(4) Antibody lgM
29. The cell wall consists of
(1) Lignin, hemicellulose, protein and lipid
(2) Hemicellulose, cellulose, tubulin and lignin
(3) Lignin, hemicellulose, pectin and lipid cellulose
(4) Lignin, hemicellulose, pectin and cellulose
30. In a Mendelian dihybrid cross, the probability of getting
seeds with genotype Rryy, RrYy, rrYy and RrYY in
F2 generation is respectively
(1) 2/16:4/16:1/8:1/8
(2) 2/16:2/16:2/16:2/16
(3) 4/16:4/16:2/16:2/16
(4) 1/8:1/4:2/8:1/16
31. Which one of the following element is not an essential
micronutrient for plant growth?
(1) Zn (2) Cu
(3) Ca (4) Mn
32. If birth and death rates were equal, a zero population
growth rate would result. It is known as
(1) Replacement level
(2) Rate of natural increase
(3) Stable population
(4) Doubling time
33. Menstruation cycle occurs
(1) In all mammals
(2) In eutherian animals
(3) In metatherian animals
(4) In all primates
34. Eutrophication is caused by
(1) Phosphate rocks only
(2) Agricultural fertilizers only
(3) Sewage and phosphate rocks
(4) Sewage and agricultural fertilizers
35. Which type of ovary is found in Liliaceae family?
(1) Superior & monocarpellary
(2) Superior & tricarpellary
(3) Inferior & monocarpellary
(4) Inferior & bicarpellary
36. A Somaclonal variation appears in plants
(1) Growing in polluted soil or water
(2) Expose to gamma rays
(3) Raised in tissue culture
(4) Transformed by recombinant DNA technology
37. In honey bees, the drones are produced from
(1) Unfertilized eggs
(2) Fertilized eggs
(3) Larvae fed by royal jelly
(4) Fasting larvae
NTA MODEL PAPER-2 4 TEST BOOKLET CODE - P
38. Active transport of ions by the cell requires
(1) High temperature
(2) ATP
(3) Alkaline pH
(4) Salts
39. The kind of epithelium which form the inner walls of
blood vessels is
(1) Cuboidal epithelium
(2) Columnar epithelium
(3) Ciliated columnar epithelium
(4) Squamous epithelium
40. Which of the following is not an insectivorous plant?
(1) Drosera (2) Nepenthes
(3) Monotropa (4) Utricularia
41. Pregnancy begins with implantation of
(1) Embryo (2) Fertilised ovum
(3) Blastopore (4) Blastocyst
42. The application of biotechnology includes all, except
(1) Biofortified crops
(2) Gene therapy
(3) Molecular diagnostics
(4) Conventional hybridization
43. In an organism, if the normal diploid number of
chromosomes is 8, how many chromatids are present
in each daughter cell at the end of meiosis I
(1) 2 (2) 4
(3) 8 (4) 16
44. Diaphragms are contraceptive devices used by
females. Choose the correct option from the statement
give below:
i. They are introduced into the uterus.
ii. They are placed to cover the cervical region.
iii. They are an example of physical
iv. They are an example of physical barriers.
(1) i and ii (2) i and iii
(3) ii and iii (4) None of these
45. ABA is involved in
(1) Dormancy of seeds
(2) Root elongation
(3) Shoot elongation
(4) Increased cell division
46. Calcitonin
(1) Lowers calcium level in blood
(2) Elevates calcium level in blood
(3) Has no effect on calcium levels
(4) Elevates potassium level in blood
47. Pollination that occurs in closed flowers is known as
(1) Allogamy (2) Cleistogamy
(3) Dicliny (4) Protogyny
48. Cork cambium is developed from
(1) Apical meristem
(2) Intercalary meristem
(3) Primitive meristem
(4) Lateral meristem
49. Which of the following statements regarding
coenzymes and prosthetic group of enzymes is not true?
(1) Both are required for enzyme action
(2) Both can be separated from enzyme by dialysis
(3) Both are organic compounds
(4) Both are no polypeptides
50. Which is not an opiate narcotic?
(1) Amphetamine (2) Morphine
(3) Heroin (4) Pethidine
51. Chloroplast of chalmydomonas is
(1) Collar – shaped
(2) Spiral
(3) Cup – Shaped
(4) Stellate
52. Viral infection is usually absent in
(1) Phloem cells (2) Xylem cells
(3) Pith cells (4) Apical meristem
53. The diagram below shows a cell cycle.
Which of the following process occur during V?
(1) Replication of DNA
(2) Replication of centrioles
(3) Chromosomes condense and become shorter and
thicker
(4) High metabolic rate and synthesis of proteins and
cellular organelles
54. Two friends are eating together on dining table. One
of them suddenly starts coughing while swallowing
some food. This coughing would have been due to
improper movement of
(1) Epiglottis (2) Diaphragm
(3) neck (4) Tongue
55. Which one of the following is the first step of
glycolysis?
(1) Breakdown of glucose
(2) Phosphorylation of glucose
(3) Conversion of glucose into fructose
(4) Dehydrogenation of glucose
56. In mitochondrial electron transport system
(1) Number of ATP molecules synthesized does not
depend on nature of electron donor
(2) ubiquinone receives reducing equivalents via
FADH2 also
(3) Cytochrome c is a large protein attached to outer
surface of inner mitochondrial membrane
(4) Complex IV has cyt. and cyt. 3 but no copper
centres
57. Which of the following branches of biology applies to
both plants and animals?
(1) Entomology (2) Zoology
(3) Bacteriology (4) Taxonomy
NTA MODEL PAPER-2 5 TEST BOOKLET CODE - P
58. Name the unlabelled area ‘A’ and ‘B’ of the pie chart
representing the biodiversity showing their
proportionate number of species of major taxa.
(1) A = Bryophytes, B = Gymnosperms
(2) A = Fungi, B = Gymnosperms
(3) A = Pteridophytes, B = Angiosperm
(4) A = Fungi, B =Angiosperms
59. The Montreal Protocol refers to
(1) Persistent organic pollutants
(2) Global warming and climate change
(3) Substances that deplete the ozone layer
(4) Biosafety of genetically modified organism
60. DNA or RNA segment tagged with radioactive
molecule is called
(1) Vector (2) Probe
(3) Clone (4) Plasmid
61. Valium is an example of
(1) Benzodiazephines
(2) Barbiturates
(3) Stimulants
(4) Hallucinogens
62. If a colour- blind man marries a woman who is
homozygous for normal colour vision, the probability
of their son being colour-bling is
(1) 0% (2) 50%
(3) 75% (4) 100%
63. The net pressure gradient that causes the fluid to filter
out from the glomeruli into the capsule is
(1) 50 mm Hg (2) 75 mm Hg
(3) 10 mm Hg (4) 30 mm Hg
64. Find the incorrect pair.
(1) Humans – Ureotelic
(2) Birds – Ureotelic
(3) Lizards – Ureotelic
(4) Whale – Ammonotelic
65. When environmental condition are favourable, then the
population growth curve will be
(1) Hyperbola (2) ‘J’ Shaped
(3) ‘S’ Shaped (4) None of these
66. Which bacteria are utilized in the biogas plant?
(1) Mehanogens (2) Nitrifying
(3) Ammonifying (4) Denitrifying
67. Erythropoiesis may be stimulated by the deficiency of
(1) Iron (2) Oxygen
(3) Protein (4) None of these
68. Apomixis is a type of reproduction that results in the
development of a/an
(1) New seed with fusion of gametes
(2) Embryo from nucellus
(3) New seed without fusion of gametes
(4) Embryo from endosperm
69. Which of the following statement is correct?
(1) Paramoecium and Plasmodium belong to the same
kingdom as that of Penicillium
(2) Lichen is a composite organism formed from the
symbiotic association of an algae and protozoan
(3) yeast used in making bread and beer is fungus
(4) Nostoc and Anabaena are example of protists
70. The largest number of neurons are found in
(1) Brain (2) Retina
(3) Spinal cord (4) Tongue
71. The adsorption of water by hydrophilic compounds like
cellulose and pectin in root hair cell wall is
called_________
(1) Diffusion (2) Imbibition
(3) Guttation (4) Osmosis
72. Plasmodesmata are cytoplasmic bridges between
adjacent plant cells, lined by___ and often have
desmotubules.
(1) Apoplasm (2) Plasma membrane
(3) Desmosomes (4) ER tubule
73. Which one of the following phenomena supports
Darwin’s concept of natural selection in organic
evolution?
(1) Development of transgenic animals
(2) Production of ‘Dolly’, the sheep by cloning
(3) prevalence of pesticide resistant insects
(4) Development of organs from ‘Stem cells’ for organ
transplantation
74. One of the most important functions of botanical garden
is
(1) One can observe tropical plants there
(2) They allow Ex-situ conservation of germplasm
(3) They provide the natural habitat for wildlife
(4) They provide a beautiful area for recreation
75. Haemocoel is found in
(1) Hydra and Aurelia
(2) Taenia and Ascaris
(3) Cockroach and scorpion
(4) Balanoglossus and Hedmania
76. With the disintegration of corpus luteum, a decrease in
the secretin of _____ hormone occurs.
(1) LH (2) progesterone
(3) LTH (4) FSH
77. Find the odd one out with respect to the function of an
ecosystem.
(1) Nutrient cycling (2) Energy flow
(3) Decomposition (4) Stratification
78. The DNA molecule to which the gene of interest is
integrated for cloning is called
(1) Vector (2) REN
(3) Competent cell (4) Transformer
NTA MODEL PAPER-2 6 TEST BOOKLET CODE - P
79. In the tissues, high concentration of carbon dioxide
(1) Increases the affinity of haemoglobin to both
oxygen and hydrogen
(2) Increases the affinity of haemoglobin to oxygen
but decreases its affinity to hydrogen
(3) Decreases the affinity of haemoglobin to oxygen
but increases its affinity to hydrogen
(4) Decreases the affinity of hemoglobin to both
oxygen and hydrogen
80. In the C4 pathway
(1) Chloroplasts are of same type
(2) Kranz anatomy occurs where mesophyll have large
chloroplasts whereas bundle sheath have granular
chloroplasts
(3) Kranz anatomy occurs where mesophyll have small
chloroplasts whereas bundle sheath have larger
agranular chloroplasts
(4) Kranz anatomy where mesophyll cells are diffuse
81. Chlorophyll is
(1) Soluble in organic solvents
(2) Soluble in water
(3) Soluble in both organic solvents and water
(4) None of these
82. Cut – Pieces of a Bryophyllum leaf, when put into wet
soil, produce new plants.
This phenomenon is called as
(1) Vegetative propagation
(2) Tissue culture
(3) Leaf primordial culture
(4) Meristem culture
83. Innominate is a
(1) Nerve (2) Muscle
(3) Animal (4) Part of skeleton
84. Examples of areas where secondary succession occurs
are
(1) Abandoned farmlands, newly cooled lava, bare rock
(2) Burned or cut forests, lands that have been flooded
(3) Bare rock, newly created pond or reservoir
(4) Newly created pond, lands that have been floode
85. In negative operon
(1) Inducer binds with repressor
(2) Co- repressor does not bind with repressor
(3) Co- Repressor binds with inducer
(4) cAMP have negative effect on lac operon
86. Choose the correct match w.r.t. the drug, its source,
and its action.
Drug Source Action
(1) Morphine Latex of
Papaver
somniferum
Depress brain
activity and is
very effective
stimulant
(2) Cocaine Erythroxylum
coca
High levels
don’t cause
hallucinations.
(3) Heroine Acetylation
of morphine
Used to reduce
pain
(4) Barbiturates Derivative of
opium
Depressed brain
activity and
produces
feelings of
calmness,
relaxation and
drowsiness
87. Which of the following represents a palindromic
sequence in DNA?
(1) 5’ - GAATTC -3’
3’ – CTTAAG – 5’
(2) 5’ – CCAATG – 3’
3’ – GAATCC – 5’
(3) 5’ – CATTAG – 3’
3’ – GATAAC – 5’
(4) 5’ – GATACC – 3’
3’ – CCTAAG – 5’
88. Wings of the bat, locust and pigeon are an example of
(1) Vestigeal organs
(2) Exoskeletal structures
(3) Homologous organs
(4) Analogous organs
89. Differentiation of shoot is controlled by
(1) High gibberellin: cytokinin ratio
(2) High auxin: cytokinin ratio
(3) High cytokinin: auxin ratio
(4) High gibberellin: auxin ratio
90. The method of sterilization is
(1) Lippes Loop (2) IUD
(3) Implants (4) Tubectomy
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