NEET Re-Exam 2026 ||
Biology Part
PART A—BOTANY
91. The number of vertebrae in a human is __________.
(A) 7
(B) 12
(C) 26
(D) 206
Answer: (C) 26
92. Symbiotic association between fungi and algae are
called __________.
(A) lichens
(B) sponges
(C) mycorrhiza
(D) chrysophytes
Answer: (A) lichens
93. Cell theory was formulated by ________.
(A) Schleiden and Schwann
(B) Robert Brown
(C) Singer and Nicolson
(D) Antonie Von Leeuwenhoek
Answer: (A) Schleiden and Schwann
94. Which of the following are characteristics of
prokaryotic cells?
(a) Ribosomes are made of 50S and 30S subunits
(b) They can have plasmids
(c) They contain mesosome
(d) They have peroxisomes
Choose the correct answer from the options given below:
(A) (b) and (c) only
(B) (a) and (c) only
(C) (a), (c) and (d) only
(D) (a), (b) and (c) only
Answer: (D) (a), (b) and (c) only
95. Which of the following is not a part of human
central neural system?
(A) Arachnoid
(B) Dura mater
(C) Pia mater
(D) Pericardium
Answer: (D) Pericardium
96. Mitochondrial inner membrane encloses________.
(A) matrix
(B) cytosol
(C) mucus
(D) aqueous humor
Answer: (A) matrix
97. Match List-I with List-II.
List-I List-II
A. Cristae I. Flat membrane sacs in stroma of chloroplast
B. Cisternae II. Infoldings in mitochondria
C. Thylakoids III. Cell membrane
D. Phospholipid IV. Disc shaped sacs in the Golgi apparatus
Choose the correct answer from the options given below:
(A) A-III, B-IV, C-I, D-II
(B) A-II, B-IV, C-I, D-III
(C) A-II, B-IV, C-III, D-I
(D) A-IV, B-III, C-I, D-II
Answer: (B) A-II, B-IV, C-I, D-III
98. The plastid that stores xanthophyll is known as
__________.
(A) chloroplast
(B) chromoplast
(C) aleuroplast
(D) amyloplast
Answer: (B) chromoplast
99. Which of the following statements related to
pituitary gland are correct?
(a) It is divided anatomically into adenohypophysis and
neurohypophysis
(b) It secretes follicle stimulating hormone
(c) It secretes melanocyte stimulating hormone
(d) It does not secrete prolactin
Choose the answer from the options given below:
(A) (a) and (b) only
(B) (a), (b) and (c) only
(C) (c) and (d) only
(D) (b) and (c) only
Answer: (B) (a), (b) and (c) only
100. Photorespiration reaction catalyzed by RuBPCo is
shown below:
RuBP + O2 → 3-Phosphoglycerate + X
Identify "X" from the given options:
(A) Phosphoenolpyruvate
(B) 2-Phosphoglycolate
(C) Oxaloacetate
(D) Malate
Answer: (B) 2-Phosphoglycolate
101. Mad cow disease is caused by __________.
(A) prions
(B) viroids
(C) Aspergillus sp.
(D) Mycoplasma sp.
Answer: (A) prions
102. Which pigment has absorption peak at 700 nm in the
photosynthetic reaction centre PS I
(P700)?
(A) Chlorophyll b
(B) Chlorophyll a
(C) Xanthophylls
(D) Carotenoids
Answer: (B) Chlorophyll a
103. In water, frogs respire using __________.
(A) skin
(B) buccal cavity
(C) lungs
(D) trachea
Answer: (A) skin
104. Which of the following represents the correct
sequence of arrangement of bones in the
lower limb of humans?
(A) Femur-tibia-patella-tarsal
(B) Patella-femur-tibia-tarsal
(C) Femur-patella-tibia-tarsal
(D) Femur-tarsal-patella-tibia
Answer: (C) Femur-patella-tibia-tarsal
105. Phyllotaxy is the pattern of arrangement of
__________
(A) leaves
(B) flowers
(C) fruits
(D) sepals
Answer: (A) leaves
106. Match List-I with List-II.
List-I List-II
A. Starch I. Fights infection
B. Antibody II. Energy storage
C. Concanavalin A III. Glucose transport
D. Glut-4 IV. Lectin
Choose the correct answer from the options given below:
(A) A-I, B-II, C-IV, D-III
(B) A-II, B-I, C-IV, D-III
(C) A-II, B-I, C-III, D-IV
(D) A-I, B-II, C-III, D-IV
Answer: (B) A-II, B-I, C-IV, D-III
107. Given below are two statements:
Statement I: When any plane passing through the central axis
of the body divides the organism
into two identical halves, it is called radial symmetry.
Statement II: In phylum Echinodermata, both adults and
larvae are radially symmetrical.
In the light of the above statements, choose the most
appropriate answer from the options
given below:
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: C) Statement I is correct but Statement II is
incorrect
108. Endomembrane system includes __________
(A) endoplasmic reticulum, Golgi complex, lysosomes and
vacuole
(B) endoplasmic reticulum, chloroplast, peroxisomes and
vacuole
(C) mitochondria, chloroplast, peroxisomes and vacuole
(D) Golgi complex, chloroplast, peroxisomes and vacuole
Answer: (A) endoplasmic reticulum, Golgi complex, lysosomes
and vacuole
109. How many molecules of pyruvic acid are produced at
the end of glycolysis from 206
molecules of glucose?
(A) 206
(B) 309
(C) 103
(D) 412
Answer: (D) 412
110. Which of the following plant growth regulators is
used as herbicide?
(A) 2,4-D
(B) Kinetin
(C) Abscisic acid
(D) Gibberellin
Answer: (A) 2,4-D
111. Given below are two statements:
Statement I: In gymnosperms, the male and female
gametophytes remain within the sporangia.
Statement II: In gymnosperms, seeds are not covered.
In the light of the above statements, choose the most
appropriate answer from the options
given below:
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (B) Both Statement I and Statement II are incorrect
112. Match List-I with List-II.
List-I List-II
A. Spherical I. Vibrio
B. Rod II. Cocci
C. Comma III. Spirilla
D. Spirillum IV. Bacilli
Choose the correct answer from the options given below:
(A) A-I, B-III, C-II, D-IV
(B) A-III, B-II, C-I, D-IV
(C) A-II, B-I, C-IV, D-III
(D) A-II, B-IV, C-I, D-III
Answer: (D) A-II, B-IV, C-I, D-III
113. Which of the following are characteristic features
of Solanaceae family?
(a) Flowers are bisexual and actinomorphic
(b) Calyx have five sepals and are united
(c) Androecium have five stamens and are epipetalous
(d) Ovary is inferior
Choose the correct answer from the options given below:
(A) (a), (b) and (c) only
(B) (d) only
(C) (a) and (b) only
(D) (b), (c) and (d) only
Answer: (A) (a), (b) and (c) only
114. Select the correct sequence of experiments that led
to a gradual understanding of
photosynthesis in green plants.
(A) Absorption spectra of chlorophyll a and b → production
of glucose → release of oxygen → role
of air
(B) Role of air → release of oxygen → production of glucose
→ absorption spectra of chlorophyll a
and b
(C) Release of oxygen → production of glucose → absorption
spectra of chlorophyll a and b → role
of air
(D) Production of glucose → role of air → release of oxygen
→ absorption spectra of chlorophyll a
and b
Answer: (B) Role of air → release of oxygen →
production of glucose → absorption spectra of chlorophyll a and b
115. The number of action potentials generated by
sino-arterial node (SAN) in a healthy human
is __________ per minute.
(A) 28 - 30
(B) 70 - 75
(C) 100 - 110
(D) 120 – 140
Answer: (B) 70 - 75
116. How many turns of Calvin cycle are required for the
formation of three molecules of glucose?
(A) 6
(B) 3
(C) 1
(D) 18
Answer: (D) 18
117. Which of the following statements is incorrect?
(A) Blood coagulates in response to an injury
(B) Blood clot consists of fibrins
(C) Fibrin is produced from fibrinogen
(D) Fibrinogen is produced from fibrin
Answer: (D) Fibrinogen is produced from fibrin
118. Match List-I with List-II.
List-I List-II
A. Family I. Sapindales
B. Genus II. Dicotyledonae
C. Class III. Anacardiaceae
D. Phylum IV. Angiospermae
E. Order V. Mangifera
Choose the correct answer from the options given below:
(A) A-I, B-V, C-II, D-IV, E-III
(B) A-II, B-I, C-III, D-IV, E-V
(C) A-II, B-III, C-V, D-I, E-IV
(D) A-III, B-V, C-II, D-IV, E-I
Answer:(D) A-III, B-V, C-II, D-IV, E-I
119. Arrange the following taxonomic categories in
ascending order.
(a) Genus (b) Class (c) Order (d) Phylum
(e) Family (f) Kingdom (g) Species
Choose the correct answer from the options given below:
(A) (g), (a), (e), (c), (b), (d), (f)
(B) (a), (c), (d), (g), (f), (b), (e)
(C) (g), (c), (d), (b), (e), (a), (f)
(D) (f), (c), (b), (g), (d), (e), (a)
Answer: (A) (g), (a), (e), (c), (b), (d), (f)
120. Match List-I with List-II.
List-I List-II
A. Marginal placentation I. Argemone
B. Axile placentation II. Tomato
C. Parietal placentation III. Primrose
D. Free central placentation IV. Pea
Choose the correct answer from the options given below:
(A) A-II, B-IV, C-I, D-III
(B) A-IV, B-II, C-III, D-I
(C) A-IV, B-III, C-II, D-I
(D) A-IV, B-II, C-I, D-III
Answer: (A) A-II, B-IV, C-I, D-III
121. Sphenopsida class belongs to __________
(A) bryophytes
(B) angiosperms
(C) gymnosperms
(D) pteridophytes
Answer: (D) pteridophytes
122. Which of the following statements regarding
photorespiration are correct?
(a) Do not occur in C3 plants
(b) CO2 is consumed and O2 is generated
(c) Phosphoglycolate is formed
(d) No synthesis of ATP and NADPH
Choose the correct answer from the options given below:
(A) (a) and (d) only
(B) (c) and (d) only
(C) (b) and (d) only
(D) (a) and (b) only
Answer: (B) (c) and (d) only
123. Smooth endoplasmic reticulum __________
(A) has ribosomes attached to its surface
(B) is the major site for the synthesis of lipids
(C) is actively involved in protein synthesis
(D) is a site for the synthesis of carbohydrates
Answer: (B) is the major site for the synthesis of lipids
124. Which one of the following statements is incorrect?
(A) α-cells of pancreas secrete glucagon
(B) α-cells of pancreas secrete insulin
(C) Glucagon stimulates glycogenolysis
(D) β-cells of pancreas secrete insulin
Answer: (B) α-cells of pancreas secrete insulin
125. Genus represents __________
(A) an individual plant or animal
(B) a population of plants and animals
(C) a group of closely related species
(D) a group of closely related families
Answer: (C) a group of closely related species
126. Which of the following is not a prokaryote?
(A) Bacteria
(B) Blue green algae
(C) Mycoplasma
(D) Fungi
Answer: (D) Fungi
127. Which of the following plant growth regulators
promotes internode elongation prior to
flowering in cabbage?
(A) Abscisic acid
(B) Gibberellin
(C) Indole butyric acid
(D) Ethephon
Answer: (B) Gibberellin
128. The correct sequence of adult cell cycle phases is
__________
(A) G1-G2-S-M
(B) G1-M-G2-S
(C) G1-S-G2-M
(D) S-M-G2-G1
Answer: (C) G1-S-G2-M
129. Match List-I with List-II.
List-I List-II
A. Fusion of protoplasms between gametes I. Meiosis
B. Fusion of two nuclei II. Plasmogamy
C. Generation of haploid spores III. Karyogamy
Choose the correct answer from the options given below:
(A) A-II, B-III, C-I
(B) A-II, B-I, C-III
(C) A-III, B-II, C-I
(D) A-I, B-III, C-II
Answer: (A) A-II, B-III, C-I
130. Given below are two statements:
Statement I: The class name Reptilia refers to creeping or
crawling mode of locomotion.
Statement II: All organisms belonging to Reptilia have three
chambered heart.
In the light of the above statements, choose the most
appropriate answer from the options
given below:
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (C) Statement I is correct but Statement II is
incorrect
131. Given below are two statements:
Statement I: Chromosomes are fully condensed at the end of
prophase I.
Statement II: Meiosis II resembles mitosis.
In the light of the above statements, choose the most
appropriate answer from the options
given below:
(A) Both Statement I and Statement II are true
(B) Both Statement I and Statement II are false
(C) Statement I is correct, but Statement II is false
(D) Statement I is incorrect, but Statement II is true
Answer: (C) Statement I is correct, but Statement II
is false
132. Which of the following is not a characteristic of
chordates?
(A) Presence of notochord
(B) Central nervous system is dorsal
(C) Absence of gills
(D) Presence of post anal tail (tail)
Answer: (C) Absence of gills
133. Length of the stem at time 0 is 20 cm. The
arithmetic growth rate is 30 cm per day. What
is the length of the stem at the end of the 7th day?
(A) 50 cm
(B) 170 cm
(C) 230 cm
(D) 460 cm
Answer: (C) 230 cm
134. Arrange the following elements in descending
order of their contribution to percentage
weight of the human body.
(a) Oxygen (b) Carbon (c) Hydrogen (d) Nitrogen
Choose the correct answer from the options given below:
(A) (a), (b), (c), (d)
(B) (c), (a), (b), (d)
(C) (b), (c), (d), (a)
(D) (b), (a), (c), (d)
Answer: (A) (a), (b), (c), (d)
135. In frogs, the number of pairs of cranial nerves
arising from the brain are __________
(A) 6
(B) 9
(C) 10
(D) 12
Answer: (C) 10
PART B Zoology
136. Which of the following is used as a clot buster ?
(A) Streptokinase
(B) Penicillin
(C) Cyclosporin A
(D) Statins
Answer: (A) Streptokinase
137. The inactive form of Bt toxin is converted to the
active form in the insect gut
(A) due to alkaline pH
(B) due to acidic pH
(C) by proteases
(D) by nucleases
Answer: (A) due to alkaline pH
138. Given below are two statements :
Statement I : Down’s syndrome is caused by the absence of
one of the X-chromosomes.
Statement II : Turner’s syndrome is caused by the presence
of an additional copy of the chromosomes.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (B) Both Statement I and Statement II are incorrect
139. Which of the following disease is not sexually
transmitted ?
(A) Syphilis
(B) Tuberculosis
(C) Gonorrhoea
(D) Genital warts
Answer: (B) Tuberculosis
140. Sperm motility is due to
(A) flagellar movement
(B) ciliary movement
(C) amoeboid movement
(D) muscular movement
Answer: (A) flagellar movement
141. Natural selection can lead to
(a) stabilisation
(b) genetic drift
(c) directional change
(d) disruption
Choose the correct answer from the options given below :
(A) (a) only
(B) (a), (c) and (d) only
(C) (a), (b), (c) and (d)
(D) (a) and (c) only
Answer: (B) (a), (c) and (d) only
142. The method of directly injecting a sperm into ovum
in assisted reproductive technology is
called :
(A) Gamete intra fallopian transfer (GIFT)
(B) Zygote intra fallopian transfer (ZIFT)
(C) Intra cytoplasmic sperm injection (ICSI)
(D) Embryo transfer (ET)
Answer: (C) Intra cytoplasmic sperm injection (ICSI)
143. Which of the following structure is not a part of
the male reproductive system ?
(A) Rete testis
B) Epididymis
(C) Vasa efferentia
(D) Infundibulum
Answer: (D) Infundibulum
144. Arrange the following in descending order of number
of species in the Amazonian rain
forest.
(a) Plants
(b) Birds
(c) Fishes
(d) Invertebrates
(e) Mammals
Choose the correct answer from the options given below :
(A) (c) > (b) > (d) > (e) > (a)
(B) (d) > (a) > (c) > (b) > (e)
(C) (e) > (b) > (a) > (c) > (d)
(D) (b) > (a) > (d) > (c) > (e)
Answer: (B) (d) > (a) > (c) > (b) > (e)
145. Given below are two statements :
Statement I : Ovulation is caused by LH surge leading to
rupture of Graafian follicles.
Statement II : Graafian follicle remaining after ovulation
transform into corpus luteum and secretes
large amount of estrogen.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (C) Statement I is correct but Statement II is
incorrect
146. Which of the following are primary consumers in a
food chain ?
(A) Parasites
(B) Predators
(C) Herbivores
(D) Carnivores
Answer: (C) Herbivores
147. A population of diploid organisms is at
Hardy-Weinberg equilibrium. If the frequency of
allele A is 0.1, the frequency of AA is
(A) 0.01
(B) 0.02
(C) 0.10
(D) 0.99
Answer: (A) 0.01
148. Match List-I with List-II.
List-I List-II
A. Excess growth hormone I. Reabsorption of water and
electrolytes in kidney
B. Luteinizing hormone II. Contraction of uterus during
child birth
C. Vasopressin III. Acromegaly
D. Oxytocin IV. Ovulation
Choose the correct answer from the options given below :
(A) A-III, B-IV, C-II, D-I
(B) A-III, B-IV, C-I, D-II
(C) A-II, B-IV, C-I, D-III
(D) A-IV, B-III, C-I, D-II
Answer: (B) A-III, B-IV, C-I, D-II
149. The opening between the right atrium and the right
ventricle is guarded by
(A) bicuspid valve
(B) tricuspid valve
(C) semilunar valve
(D) sino-atrial node
Answer: (B) tricuspid valve
150. Sponges exchange O2 with CO2 by
(A) simple diffusion over their entire body surfaces
(B) moist cuticle
(C) tracheal tubes
(D) gills
Answer: (A) simple diffusion over their entire body surfaces
151. How many theca are present in each lobe of a typical
bilobed angiosperm anther ?
(A) 2
(B) 6
(C) 8
(D) 12
Answer: (A) 2
152. Muscle contraction is initiated by a signal sent by
the central nervous system by the
release of
(A) acetyl choline
(B) acetyl coenzyme A
(C) cyclic guanine monophosphate
(D) cyclic adenine monophosphate
Answer: (A) acetyl choline
153. Which of the following statements about lac-operon
is correct ?
(A) Gene i is constitutively expressed
(B) Lactose activates repressor to bind to the operator
(C) Genes i, z, y and a share single common promoter
(D) Galactose can act as an inducer of lac operon
Answer: (A) Gene i is constitutively expressed
154. Which of the following in female gametophyte of an
angiosperm helps in guiding the
pollen tube for fertilizing the eggs ?
(A) Antipodals
(B) Synergids
(C) Central cells
(D) Polar nucleus
Answer: (B) Synergids
155. Which of the following plant produces non-albuminous
seeds ?
(A) Wheat
(B) Maize
(C) Barley
(D) Pea
Answer: (D) Pea
156. If the diploid chromosome number of typical
angiosperm is 36, what would be the
chromosome number in its endosperm ?
(A) 18
(B) 36
(C) 54
(D) 72
Answer: (C) 54
157. Which of the following statements about the
reabsorption process in Henle’s loop are
correct ?
(a) The descending limb of Henle’s loop is permeable to
water but almost impermeable to electrolytes.
(b) Urine gets concentrated in Henle’s loop.
(c) Reabsorption of N a+
and water takes place in Henle’s loop.
(d) Active or passive transport of electrolytes occurs in
the ascending limb of Henle’s loop.
Choose the correct answer from the options given below :
(A) (a) and (b) only
(B) (b), (c) and (d) only
(C) (a), (b) and (c) only
(D) (a), (b) and (d) only
Answer: (D) (a), (b) and (d) only
158. Which of the following is the correct order of
arrangement of vertebrate column from the
head to toe ?
(A) Cervical vertebra, thoracic vertebra, sacrum, lumbar
vertebra
(B) Sacrum, lumbar vertebra, thoracic vertebra, cervical
vertebra
(C) Cervical vertebra, lumbar vertebra, thoracic vertebra,
sacrum
(D) Cervical vertebra, thoracic vertebra, lumbar vertebra,
sacrum
Answer: (D) Cervical vertebra, thoracic vertebra, lumbar
vertebra, sacrum
159. Which of the following is not evidence for evolution
?
(A) Convergent evolution of traits like wings of birds and
butterflies
(B) Paleontological evidence from fossil records
(C) Embryological support for evolution as proposed by Ernst
Haeckel
(D) Divergent evolution of anatomical structures such as
forelimbs
Answer: (C) Embryological support for evolution as proposed
by Ernst Haeckel
160. Given below are two statements :
Statement I : Modern Homo sapiens arose in Africa and moved
across continents.
Statement II : Homo sapiens arose around 75000 to 10000
years ago.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (D) Statement I is incorrect but Statement II is
correct
161. Consider a population of 10 million cells. Given the
per-capita birth rate of 0.002 (per
unit time) and the per-capita death rate of 0.002 (per
unit time), the expected number of cells
after 10 generations is
(A) 1 million
(B) 5 million
(C) 10 million
(D) 100 million
Answer: (C) 10 million
162. During PCR, primers bind to the DNA strands in the
______ step.
(A) denaturation
(B) extension
(C) annealing
(D) ligation
Answer: (C) annealing
163. Given below are two statements : one is labelled as
Assertion A and the other is labelled
as Reason R.
Assertion A : The logistic growth model of populations is
considered more realistic than the exponential growth model.
Reason R : Resources are finite.
In the light of the above statements, choose the most appropriate
answer from the options
given below :
(A) Both A and R are correct and R is the correct
explanation of A
(B) Both A and R are correct but R is not the correct
explanation of A
(C) A is correct but R is not correct
(D) A is not correct but R is correct
Answer: (A) Both A and R are correct and R is the correct
explanation of A
164. Adaptive radiation in placental mammals and
Australian Marsupials leading to similarity
between distant species is an example of
(A) divergent evolution
(B) convergent evolution
(C) founder effect
(D) genetic drift
Answer: (B) convergent evolution
165. Which of the following are secondary lymphoid organs
?
(a) Bone marrow
(b) Tonsils
(c) Spleen
(d) Thymus
Choose the correct answer from the options given below :
(A) (a) and (b) only
(B) (b) and (c) only
(C) (b) and (d) only
(D) (a) and (d) only
Answer: (B) (b) and (c) only
166. Which of the following hormone is not secreted by
human placenta ?
(A) hCG
(B) Estrogen
(C) Progesterone
(D) LH
Answer: (D) LH
167. Which of the following enzymes synthesizes precursor
mRNA ?
(A) RNA polymerase I
(B) RNA polymerase II
(C) RNA polymerase III
(D) DNA polymerase
Answer: (B) RNA polymerase II
168. Given below are two statements :
Statement I : Plasmids are autonomously replicating DNA.
Statement II : Plasmids are extrachromosomal DNA.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
Answer: (A) Both Statement I and Statement II are correct
169. For a person with blood group ’O’, which of the
following is not a possible combination
of parents’ blood group genotypes ?
(A) Father : IAi and Mother : IAi
(B) Father : IBi and Mother : IBi
(C) Father : IAIB and Mother : IAi
(D) Father : IAi and Mother : IBi
Answer: (C) Father : IAIB and Mother : IAi
170. Given below are two statements : one is labelled as
Assertion A and the other is labelled
as Reason R.
Assertion A : Forelimbs of human and bats are homologous.
Reason R : Forelimbs of humans and bats have similar
anatomical structure.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both A and R are correct and R is the correct
explanation of A
(B) Both A and R are correct but R is not the correct
explanation of A
(C) A is true but R is false
(D) A is false but R is true
Answer: (A) Both A and R are correct and R is the correct
explanation of A
171. Colostrum, secreted by mother during initial days of
lactation, is abundant in
(A) IgG
(B) IgM
(C) IgA
(D) IgD
Answer : (C) IgA
172. Given below are two statements : one is labelled as
Assertion A and the other is labelled
as Reason R.
Assertion A : Abingdon tortoise in Galapagos islands became
extinct within a decade after goats
were introduced.
Reason R : Goats were more efficient at browsing than
Abingdon tortoise.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both A and R are correct and R is the correct
explanation of A
(B) Both A and R are correct but R is not the correct
explanation of A
(C) A is correct but R is not correct
(D) A is not correct but R is correct
Answer: (A) Both A and R are correct and R is the correct
explanation of A
173. The covering of ovum at ovulation is
(A) endometrium
(B) zona radiata
(C) zona pellucida
(D) chorion
Answer: (C) zona pellucida
174. Match List-I with List-II.
List-I List-II
A. Both species are harmed I. Predation
B. One species is harmed and the other is benefited II.
Mutualism
C. Both species are benefited III. Competition
D. One is benefited while the other has no effect IV.
Commensalism
Choose the correct answer from the options given below :
(A) A-III, B-IV, C-II, D-I
(B) A-I, B-II, C-III, D-IV
(C) A-II, B-I, C-IV, D-III
(D) A-III, B-I, C-II, D-IV
Answer: (D) A-III, B-I, C-II, D-IV
175. Given below are two statements : one is labelled as
Assertion A and the other is labelled
as Reason R.
Assertion A : In an experiment, Mendel observed that the F1
progeny plants are all tall and none
are dwarf.
Reason R : Stem height is a contrasting trait, with tall
being dominant and dwarf being recessive.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both A and R are correct and R is the correct
explanation of A
(B) Both A and R are correct but R is not the correct
explanation of A
(C) A is correct but R is not correct
(D) A is not correct but R is correct
Answer: (A) Both A and R are correct and R is the correct
explanation of A
176. Given below are two statements : one is labelled as
Assertion A and the other is labelled
as Reason R.
Assertion A : In recombinant DNA technology, lysozyme is
used for disrupting bacterial cells while
cellulase is used for plant cells.
Reason R : Isolation of genetic material needs disruption of
cells.
In the light of the above statements, choose the most
appropriate answer from the options
given below :
(A) Both A and R are correct and R is the correct
explanation of A
(B) Both A and R are correct but R is not the correct
explanation of A
(C) A is correct but R is not correct
(D) A is not correct but R is correct
Answer: (A) Both A and R are correct and R is the correct
explanation of A
177. Which of the following is used as an effective sedative
and painkiller for treating postsurgery patients ?
(A) Interferon
(B) Antibiotics
(C) Morphine
(D) Anti-retroviral drugs
Answer: (C) Morphine
178. Which of the following statements are correct ?
(a) Energy flow from producers to consumers is
unidirectional
(b) Energy pyramid can never be inverted
(c) Transfer of energy follows the 1% law
Choose the correct answer from the options given below :
(A) (a), (b) and (c)
(B) (a) and (b) only
(C) (a) and (c) only
(D) (b) and (c) only
Answer: (B) (a) and (b) only
179. Which of the following statements is correct about
Plasmodium ?
(A) Reproduces sexually in liver cells
(B) Reproduces sexually in RBCs
(C) Gametocytes develop in mosquito gut
(D) Fertilization takes place in mosquito gut
Answer: (D) Fertilization takes place in mosquito gut
180. Match List-I with List-II.
List-I List-II
A. Transformation I. Restriction enzyme
B. Cloning site II. Transfer DNA to host bacteria
C. Selection III. Replication
D. Ori IV. Antibiotic
Choose the correct answer from the options given below :
(A) A-II, B-I, C-IV, D-III
(B) A-I, B-II, C-IV, D-III
(C) A-III, B-IV, C-II, D-I
(D) A-IV, B-I, C-III, D-I
Answer: (A) A-II, B-I, C-IV, D-III