CUSAT CAT 2022 Question Paper Life Science

611 - LIFE SCIENCE
(FINAL)

1. The hormone released by the parathyroid gland in response to
2+
the fall of blood Ca level is

(A) Insulin
(B) Calcitonin
(C) Adrenaline
(D) PTH

2. Choose the correct matching pair from the following options:
(A) Vitamin C: Anemia
(B) Vitamin B1: Beriberi
(C) Vitamin B6: Scurvy
(D) Vitamin K: Rickets

3. Low pH decreases the affinity of hemoglobin for O2, an effect called as

(A) Bohr shift
(B) Chloride shift
(C) Hamburger phenomenon
(D) Lineas phenomenon

+
4. Which tubule plays a crucial role in regulating the K and NaCl
concentration of body fluids?

(A) Distal tubule
(B) Proximal tubule
(C) Loop of Henle
(D) Collecting tubule

5. What is the correct sequence of embryonic development in mammals?

(A) Fertilization → Cleavage → Morula → Zygote → Blastula → Gastrula
(B) Zygote → Cleavage → Morula → Fertilization → Blastula → Gastrula
(C) Fertilization → Zygote → Cleavage → Morula → Blastula → Gastrula
(D) Fertilization → Zygote → Cleavage → Blastula → Morula → Gastrula

6. Which one among the following immune cells secrete antibodies?

(A) Plasma B cell
(B) T helper cell
(C) T regulatory cell
(D) Natural killer cell

7. In mammals, circadian rhythms are coordinated by clustered neurons in the
hypothalamus, forming a structure called as

(A) Suprachiasmatic nucleus
(B) Motor neurons
(C) Sensory neurons
(D) Corpus Callosum

8. Nociceptors belong to which of the following category of receptors?

(A) Mechanoreceptors
(B) Chemoreceptors
(C) Pain receptors
(D) Thermoreceptors

9. Which of the following photoreceptor cells provide color vision?

(A) Rods
(B) Parenchyma
(C) Pericycle
(D) Cones

10. Fungi that form sheaths of hyphae over the surface of a root and typically grow in the
extracellular space of the root cortex are known as

(A) Arbuscular fungi
(B) Ectomycorrhizal fungi
(C) Coenocytic fungi
(D) Hyphae fungi

11. Transfer of genetic material between two bacterial cells is known as

(A) Transformation
(B) Translation
(C) Amplification
(D) Conjugation

12. “Ratites” is a group of organisms belonging to which one among the following?

(A) Bacteria
(B) Bird
(C) Reptile
(D) Mammal

13. The innermost whorl of a flower is constituted by

(A) Carpel
(B) Sepal
(C) Tepal
(D) Stamen

14. Malathion is a/an

(A) Acetylcholinesterase inhibitor
(B) Voltage-gated Sodium channel inhibitor
(C) Chitin synthesis inhibitor
(D) Acetylcholine receptor inhibitor

15. The phenomenon where accumulated toxins become more concentrated in successive
trophic levels of a food web is known as

(A) Biological magnification
(B) Toxication
(C) Toxicity exaltation
(D) Detoxification

16. A strategy that modifies the environment to increase bioremediation by the existing
organism is known as

(A) Bioaugmentation
(B) Biostimulation
(C) Bioconcentration
(D) Bioaccumulation

17. On sequence analysis of a double-stranded DNA, the results showed the content of
Cytosine as 30%. What is the amount of A and T put together?

(A) 70%
(B) 40%
(C) 20%
(D) 30%

18. An interaction between species that benefits one of the species but neither harms nor
helps the other species is known as

(A) Mutualism
(B) Predation
(C) Parasitism
(D) Commensalism

19. In angiosperms, after fertilization, the ploidy level of endosperm is

(A) 1n
(B) 2n
(C) 3n
(D) 4n

20. How many pairs of chromosomes does Drosophila melanogaster have?

(A) 4
(B) 8
(C) 2
(D) 6

21. Infectious proteins are known as

(A) Abzymes
(B) Prions
(C) Proviruses
(D) Viroids

22. Malpighian tubules are the organs found in

(A) Annelids
(B) Arthropods
(C) Platyhelminths
(D) Vertebrates

23. The fully processed eukaryotic mRNA protects itself from digestion by
5’-exoribonuclease due to the presence of

(A) 5’ cap
(B) 3’ poly-A tail
(C) 3’ cap
(D) 5’ poly-A tail

24. Which of the following codons code amino acids, Selenocysteine and Pyrrolysine?

(A) UUU and CUU
(B) UGA and UUU
(C) UAG and CUU
(D) UGA and UAG

25. During carboxylation in C3 plants, the very first product formed is

(A) Phosphoglyceraldehyde
(B) Oxaloacetic acid
(C) Malic acid
(D) Phosphoglyceric acid

26. The class of enzymes that catalyzes the reaction involving the addition of groups to
double bonds, or formation of double bonds by removal of groups are called as

(A) Lyases
(B) Oxidoreductases
(C) Transferases
(D) Ligases

27. The main repository of inorganic ions in the plant cell is

(A) Lysosomes
(B) Chloroplast
(C) Mitochondria
(D) Central Vacuole

28. A protein destined to be degraded through the proteasomal pathway is
first tagged with

(A) Aminopeptidase
(B) IgG antibody
(C) Rab protein
(D) Ubiquitin

29. G2/M class of cyclin contains

(A) Cyclin B
(B) Cyclin D
(C) Cyclin A
(D) Cyclin E

30. Down Syndrome belongs to which of the following classes of genetic disorder?

(A) Nullisomy
(B) Trisomy
(C) Monosomy
(D) Disomy

31. The average molecular weight of a base pair is

(A) 660 dalton
(B) 1320 dalton
(C) 330 dalton
(D) 110 dalton

32. The homeobox region in Drosophila contains

(A) 160-nucleotide sequence
(B) 60-nucleotide sequence
(C) 180-nucleotide sequence
(D) 80-nucleotide sequence

33. Rice sheath blight disease is caused by

(A) Pyricularia oryzae
(B) Xanthomonas oryzae
(C) Sarocladium oryzae
(D) Rhizoctonia solani

34. All enzymes of the TCA cycle are located in the mitochondrial matrix except one,
which is located in inner mitochondrial membrane in eukaryotes and in the cytosol in
prokaryotes. This enzyme is

(A) Isocitrate dehydrogenase
(B) Malate dehydrogenase
(C) Succinate dehydrogenase
(D) Lactate dehydrogenase

35. For the synthesis of one glucose molecule, the number of ATP required is

(A) 9 ATP for the C3 cycle and 18 ATP for the C4 cycle
(B) 18 ATP for the C3 cycle and 30 ATP for the C4 cycle
(C) 32 ATP for the C3 cycle and 30 ATP for the C4 cycle
(D) 18 ATP for the C3 cycle and 32 ATP for the C4 cycle

36. Highly condensed interphase chromatin visible as irregular clumps with the light
microscope is known as

(A) Polychromatin
(B) Euchromatin
(C) Heterochromatin
(D) Histochromatin

37. In human telomeres, which one of the following short nucleotide sequences are
repeated multiple times?

(A) AAACCC
(B) GGAACC
(C) ATCGCG
(D) TTAGGG

38. The half-life of Carbon-14 is

(A) 4.5 billion years
7
(B) 1.57 × 10 years
(C) 5,730 years
(D) 100 days

39. N-Formyl-methionine is the starting residue for protein synthesis in

(A) Archaea
(B) Fungi
(C) Bacteria
(D) Plants

40. The genetic condition where males carry one extra copy of the X chromosome apart
from XY is known as

(A) Edwards syndrome
(B) Klinefelter syndrome
(C) Turner syndrome
(D) Cri-du-chat syndrome

41. The large subunit of prokaryotic 70S ribosome consists of

(A) 16S rRNA
(B) 18S rRNA
(C) 28S, 5.8S and 5S rRNA
(D) 23S and 5S rRNA

42. Tocopherol is a chemical compound that belongs to which of the following Vitamins?

(A) E
(B) A
(C) C
(D) D

43. Chyme is

(A) a mixture of saliva and food in the shape of a ball
(B) a mixture of water, salts, cells and glycoprotein
(C) another name of bile
(D) a mixture of ingested food and gastric juice

44. The small, accessible part of an antigen that binds to an antigen receptor is called as

(A) Paratope
(B) Antibody
(C) Epitope
(D) Allotrope

45. Bicollateral vascular bundles are found in the family of

(A) Malvaceae
(B) Musaceae
(C) Cucurbitaceae
(D) Solanaceae

46. The largest operon of vir region in Ti plasmid of Agrobacterium radiobacter is

(A) vir C
(B) vir D
(C) vir E
(D) vir B

47. The defensive adaptation in animals where a harmless species mimics as
a harmful one is

(A) Mullerian mimicry
(B) Aposematic Coloration
(C) Cryptic Coloration
(D) Batesian mimicry

48. The study of vital statistics of population and its change over time is known as

(A) Life table
(B) Demography
(C) Immigration
(D) Survivorship Curve

49. Gaps between adjacent Schwann cells are called as

(A) Myelin sheath
(B) Nodes of Ranvier
(C) Oligodendrocyte
(D) Axon hillock

50. Histamine is released by which of the following cell?

(A) B lymphocyte
(B) Mast cell
(C) Neutrophil
(D) Eosinophil

51. Melatonin is produced by which of the following gland?

(A) Thymus
(B) Pituitary
(C) Pineal
(D) Pancreas

52. Lateral meristem consists of which of the following?

(A) Vascular bundle and cork cambium
(B) Vascular cambium and cork cambium
(C) Protoderm and Calyptrogen
(D) Vascular cambium and Calyptrogen

53. Which of the following is the sex-determination system in grasshoppers?

(A) X-Y
(B) Z-W
(C) X-O
(D) Z-O

54. The family of plants commonly known as “Sedges” is

(A) Malvaceae
(B) Cyperaceae
(C) Brassicaceae
(D) Xyridaceae

55. Which of the following is a natural plant hormone?

(A) Indole-3-acetic acid
(B) Indole-3-butyric acid
(C) 1-Naphthaleneacetic acid
(D) 2,4-dichlorophenoxyacetic acid

56. Which of the following statements is NOT true about G proteins?

(A) G proteins become activated when bound to GTP
(B) G proteins function as GTPase enzyme
(C) G proteins are involved in a signal cascade
(D) G proteins become activated when bound to GDP

57. The most abundant glycoprotein in the extracellular matrix of most animal cells is

(A) Collagen
(B) Integrins
(C) Laminin
(D) Fibronectin

58. When a few individuals become isolated from a larger population, this smaller group
may establish a new population whose gene pool differs from the source population.
This is called as the

(A) Founder effect
(B) Bottleneck effect
(C) Natural selection
(D) Gene flow

59. Disjunction of the synapsed homologous chromosomes occur in

(A) Anaphase II
(B) Anaphase I
(C) Metaphase I
(D) Prophase I

60. The shortest phase of the cell cycle is

(A) G1 phase
(B) G2 phase
(C) M phase
(D) S phase

61. Among the following, which cell organelle is involved in apoptosis?

(A) Endoplasmic reticulum
(B) Mitochondria
(C) Golgi apparatus
(D) Centrosome

62. Calmodulin is a calcium-binding messenger protein of eukaryotic cells. A single
2+
calmodulin protein binds to which of the following number of Ca ions?

(A) 3
(B) 2
(C) 1
(D) 4

63. Left-handed α helix in Ramachandran plot will have the following values

(A) High Ψ and low Φ values
(B) High Ψ and Φ values
(C) Low Ψ and high Φ values
(D) Low Ψ and Φ values

64. The term “dodecyl” in Sodium dodecyl sulfate represents

(A) 10-carbon chain with an amino group
(B) 10-carbon chain with a hydroxyl group
(C) 12-carbon chain with an aromatic ring
(D) 12-carbon chain

65. In eukaryotic cells, the mRNA is transcribed from the nuclear DNA by

(A) RNA polymerase I
(B) RNA polymerase III
(C) RNA polymerase II
(D) RNA polymerase IV

66. The nervous system in an adult animal is derived from
which of the following germ layer?

(A) Mesoderm
(B) Ectoderm
(C) Endoderm
(D) Meso-endoderm

67. Erythropoietin is mainly synthesized in

(A) Heart
(B) Liver
(C) Kidney
(D) Spleen

68. The speciation where gene flow is interrupted due to division of a population into
geographically isolated sub-populations is known as

(A) Allopatric
(B) Sympatric
(C) Parapatric
(D) Neopatric

69. Choanocytes are found in one of the following phyla

(A) Annelida
(B) Porifera
(C) Arthropoda
(D) Mollusca

70. Which of the following is used as a primary dye in acid-fast staining?

(A) Safranin
(B) Methylene blue
(C) Carbol fuchsin
(D) Eosine

71. Which of the following amino acids is coded by three codons (AUU, AUC, AUA)?

(A) Tryptophan
(B) Isoleucine
(C) Glycine
(D) Tyrosine

72. An animal whose body temperature varies with the environment is known as

(A) Homeothermic
(B) Poikilothermic
(C) Endothermic
(D) Isothermic

73. Monotremes are

(A) Mammals with a pouch
(B) Placental mammals
(C) Marine reptiles
(D) Egg-laying mammals

74. In the 1930s, which of the following organisms was used to formulate
the “one gene-one enzyme” hypothesis?

(A) Neurospora crassa
(B) Drosophila melanogaster
(C) Homo sapiens
(D) Penicillium chrysogenum

75. In the generalized life cycle of fungi, the union of the cytoplasm of
two-parent mycelia refers to

(A) Heterogamy
(B) Plasmogamy
(C) Karyogamy
(D) Oogamy

76. Skeletal muscle bundles are held together by a
common connective tissue layer known as

(A) Perimysium
(B) Fascia
(C) Aponeurosis
(D) Endomysium

77. The structural units of a compound eye of many insects,
crustaceans and polychaete worms are called as

(A) Ommatidia
(B) Rhabdom
(C) Cornea
(D) Simple eye

78. A severe mental disturbance characterized by psychotic episodes in which patients
have a distorted perception of reality is called as

(A) Depression
(B) Parkinson’s disorder
(C) Alzheimer’s disease
(D) Schizophrenia

79. The primary function of the sodium-potassium pump across the plasma membrane is

(A) to move sodium in and potassium outside the cell
(B) to move both sodium and potassium outside the cell
(C) to move sodium out and potassium inside the cell
(D) to move both sodium and potassium inside the cell

80. Which of the following represents the correct order of events during the reproductive
cycle of the human female?

(A) FSH rise, ovulation, follicular phase, luteal phase, menstruation
(B) Menstruation, FSH rise, LH surge, ovulation, luteal phase
(C) Follicular phase, luteal phase, LH surge, ovulation, menstruation
(D) Luteal phase, menstruation, FSH rise, ovulation, proliferative phase

81. The elastic tissue which connects the Cauda epididymis to the scrotal sac is known as

(A) Caput epididymis
(B) Scrotal ligament
(C) Gubernaculum
(D) Tendinous cord

82. The volume of air inhaled and exhaled with each breath during
normal breathing is called as

(A) Expiratory reserve volume
(B) Residual volume
(C) Inspiratory reserve volume
(D) Tidal volume

83. Which of the following breeds only once in its life time?
(A) Dispersed
(B) Clumped
(C) Iteroparous
(D) Semelparous

84. Which of the following ecosystems consists of forest, grassland and deserts?

(A) Terrestrial ecosystem
(B) Artificial ecosystem
(C) Aquatic ecosystem
(D) Natural ecosystem

85. The skeleton structure of all amino acids is same except for

(A) Lysine
(B) Proline
(C) Glycine
(D) Alanine

86. What is the protein found in nail, hair and horns?

(A) Collagen
(B) Keratin
(C) Hemoglobin
(D) Myoglobin

87. What bond stabilizes the double-helix of DNA?

(A) Hydrophobic bond
(B) Covalent bond
(C) Hydrogen bond
(D) Ionic bond

88. Identify the unsaturated fatty acid.

(A) Lauric
(B) Linoleic
(C) Palmitic
(D) Myristic

89. Megaloblastic anemia is caused by the deficiency of

(A) Thiamine
(B) Pyridoxine
(C) Niacin
(D) Folic acid

90. Which of the following is a component of the coenzyme A?

(A) Retinol
(B) Pantothenic acid
(C) Pyridoxine
(D) Folic acid

91. What is the SI unit of enzyme activity?

(A) Km
(B) Kat
(C) Kcat
(D) Vmax

92. Which of the following equations shows the relationship between free energy change
(∆G ) and the change in entropy (∆S ), under constant temperature and pressure?

(A) ∆G = T ∆H − ∆S
(B) ∆G = T ∆H / ∆S
(C) ∆G = ∆H / T ∆S
(D) ∆G = ∆H − T ∆S

93. Which of the following is an example of amphibolic pathway?

(A) Glyoxylate
(B) Citric acid cycle
(C) Glycolysis
(D) Lipid metabolism

94. Which of the following was used in Engelmann’s experiment to
show photosynthetic activity?

(A) Spirogyra spp.
(B) Rhizopus stolonifer
(C) Cyanobacteria sp.
(D) Penicillium spp.

95. The priming function in glycogen synthesis is done by
which of the following molecules?

(A) Lysine
(B) Arginine
(C) Glycogenin
(D) Glutamate

96. Triacylglycerol packed with the apolipoprotein and cholesterol in lipoprotein
aggregate is known as

(A) HDL
(B) Chylomicrons
(C) VLDL
(D) LDL

97. Which of the following is the energy source for the brain during starvation?

(A) Fat
(B) Ketone bodies
(C) Protein
(D) Lipids

98. Which of the following pairs of amino acids is essential for infants?

(A) Methionine and Glycine
(B) Valine and Serine
(C) Arginine and Histidine
(D) Lysine and Leucine

99. Name the type of cell in which synthesis of urea cycle takes places.

(A) Pancreatic cell
(B) Bowman’s gland cell
(C) Urinary epithelium cell
(D) Hepatocyte

100. What is the end product of purine degradation in mammals?

(A) Guanine
(B) Inosine
(C) Uric acid
(D) Hypoxanthine

101. Which of the following genetic disorders is caused by
the deficiency of enzyme HGPRT?

(A) SCID
(B) Lesch-Nyhan syndrome
(C) Cystic fibrosis
(D) Down syndrome

102. Who discovered the cell by observing a piece of cork under a microscope?

(A) Louis Pasteur
(B) Rudolf Virchow
(C) Anton van Leeuwenhoek
(D) Robert Hooke

103. Who discovered ribosome for the first time?

(A) George Emil Palade
(B) Theodor Schwann
(C) Anton van Leeuwenhoek
(D) Robert Hooke

104. What is the largest single membrane-bound intracellular compartment?

(A) Golgi apparatus
(B) Ribosome
(C) Nucleus
(D) Endoplasmic reticulum

105. The release of melanosomes from melanocytes is mediated by

(A) Autophagy
(B) Endocytosis
(C) Exocytosis
(D) Pinocytosis

106. Which of the following carry two nuclei?

(A) Slime molds
(B) Paramoecium
(C) Cyanobacteria
(D) Amoeba

107. Which of the following organelles is used for aerobic respiration and
ATP synthesis in Entamoeba histolytica?

(A) Hydrogenosome
(B) Mitochondria
(C) Mitosome
(D) Peroxisome

108. The plant organelle that acts as the major site for oxidative reaction is

(A) Peroxisome
(B) Mitochondria
(C) Chloroplast
(D) Thylakoid

109. Select the signal molecule that does NOT interact with cell surface receptor

(A) Insulin
(B) Glucagon
(C) Testosterone
(D) Gastrin

110. The process of nuclear division is known as

(A) Interkinesis
(B) Karyokinesis
(C) Polymerization
(D) Cytokinesis

111. The molecule used to determine the evolutionary relationship
between taxonomic groups is

(A) 23S rRNA
(B) 5S rRNA
(C) 18S rRNA
(D) 16S rRNA

112. Which of the following bacteria is pleomorphic?

(A) Mycobacteria
(B) Streptococcus
(C) Pseudomonas
(D) Corynebacterium

113. Name the acid present in the cell wall of a bacterium that helps in retaining its colour
during the acid-fast test

(A) Teichoic acid
(B) Malic acid
(C) Mycolic acid
(D) Tartaric acid

114. Which of these is NOT a selective medium?

(A) Eosin methylene blue agar
(B) MacConkey agar
(C) Blood agar
(D) Mannitol salt agar

115. The ability of an organism to resist infection by pathogen is called

(A) Allergy
(B) Hypersensitivity
(C) Infection
(D) Immunity

116. Which of the following antibodies gives primary immune reaction?

(A) IgA
(B) IgE
(C) IgG
(D) IgM

117. Which of the following cells is multipotent?

(A) Hematopoietic stem cell
(B) T-cell
(C) B-cell
(D) Monocytes

118. An example of non-professional antigen presenting cells is

(A) Macrophages
(B) B lymphocytes
(C) Fibroblast
(D) Dendritic cells

119. Who is known as the father of taxonomy?

(A) Aristotle
(B) Carl Linnaeus
(C) Earnst Haeckel
(D) Robert Whittaker

120. Which of the following belongs to the class ‘Phanerogamae’?

(A) Angiosperm
(B) Bryophytes
(C) Pteridophytes
(D) Thallophyta

121. Which organisms have segmental nephridia for osmoregulation and excretion?

(A) Aschelminthes
(B) Annelida
(C) Platyhelminthes
(D) Arthropoda

122. The tendency of two or more than two genes to stay together
during inheritance is known as

(A) Crossing over
(B) Gene interaction
(C) Genetics
(D) Linkage

123. Which of the following is NOT a sex-limited ‘trait’?

(A) Baldness
(B) Milk production
(C) Musculature
(D) Pitch of voice

124. The pedigree analysis is a

(A) Linkage map
(B) Quantitative genetic analysis
(C) Polygene analysis
(D) Record of inheritance pattern

125. Alteration in which of the following chromosomes shows Down syndrome?

(A) Sex chromosome
(B) 18
(C) 21
(D) 13

126. Rearrangement of DNA that involves the breakage and reunion of
fragments is known as

(A) Replication
(B) Recombination
(C) Translation
(D) Transcription

127. Name the repair system for UV-mediated damage of DNA

(A) Nucleotide excision repair
(B) DNA glycosylase
(C) Exchange of homologous segments
(D) Photoreactivation

128. Which of the following is NOT a step of mRNA processing?

(A) Polyadenylation
(B) Splicing of introns
(C) 5’ capping
(D) RNA silencing

129. What is the detection technique of auxotrophs?

(A) Spread plating
(B) Replica plating
(C) Pure culture technique
(D) Hybridization

130. What is the site of spermatogenesis?

(A) Seminiferous tubules
(B) Epididymis
(C) Rete testis
(D) Vas deferens

131. Name the enzyme which cleaves dsDNA after recognizing
specific nucleotide sequences

(A) DNA polymerase
(B) Ligases
(C) RNase H
(D) Restriction endonuclease

132. Name the vector system used for plant genetic transformation

(A) Cosmids
(B) M13 phage
(C) Ti plasmid
(D) Resistance plasmid

133. Which of the following is the unit of a genetic map?

(A) Angstrom
(B) Nanometer
(C) Centimeter
(D) Centimorgan

134. What is supplemented with pro-vitamin A in order to improve its nutritional quality?

(A) Tomato
(B) Potato
(C) Rice
(D) Cotton

135. The asexual mode of embryo formation is

(A) Protoplast culture
(B) Callus culture
(C) Somatic embryogenesis
(D) Protoplast fusion

136. Who proposed the concept of ‘essential mineral nutrients’ of plants?

(A) Arnon and Stout
(B) Carl Linnaeus
(C) Aristotle
(D) Leonhart Fuchs

137. Which of the following enzymes does NOT need Manganese for its activity?

(A) Nitrogenase
(B) Arginase
(C) Superoxide dismutase
(D) Pyruvate carboxylase

138. Name the term which defines the plant movement by touch

(A) Seismonasty
(B) Thigmonasty
(C) Nyctinasty
(D) Photonasty

139. Which of the following cells support, nourish and protect the neurons?

(A) Ganglia
(B) Perikaryon
(C) Glial cells
(D) Nissl bodies

140. Name the part of the eye which produces aqueous fluid that
fills the front part of the eye:

(A) Ciliary body
(B) Cornea
(C) Vitreous humor
(D) Uvea

141. What is the name of the gland which secretes melatonin?

(A) Pituitary gland
(B) Pineal gland
(C) Thyroid gland
(D) Hypothalamus

142. What is micturition?

(A) Discharge of feces
(B) Discharge of sweat
(C) Discharge of urine
(D) Discharge of sperm

143. Which of the following is the energy source of the sperm?

(A) Fructose
(B) Proteins
(C) Lipids
(D) Nucleic acids

144. The process which begins after fertilization is known as

(A) Organogenesis
(B) Cleavage
(C) Spermiogenesis
(D) Embryogenesis

145. What is pedology?

(A) Study of climate
(B) Study of leaves
(C) Study of soil
(D) Study of the effect of light on plant growth

146. Genetically different population with the same physical features is known as

(A) Community
(B) Ecotype
(C) Ecads
(D) Ecosystem

147. Which of the following zones lies at the bottom of the sea?

(A) Benthic
(B) Littoral
(C) Pelagic zone
(D) Neritic zone

148. Which type of anemia is responsible for the disease thalassemia?

(A) Hemolytic anemia
(B) Aplastic anemia
(C) Hemorrhagic anemia
(D) Iron deficiency anemia

149. An apoenzyme is defined as

(A) a protein portion of an enzyme
(B) a non-protein group
(C) a complete, biologically active conjugated enzyme
(D) a prosthetic group

150. Who is referred to as ‘Father of Genetics’?

(A) Gregor Johann Mendel
(B) Erich Tschemark
(C) Hugo de Vries
(D) Carl Correns

FINAL ANSWER KEY
Subject Name: 611 LIFE SCIENCE
SI No. Key SI No. Key SI No. Key SI No. Key SI No. Key
1 D 31 A 61 B 91 B 121 B
2 B 32 C 62 D 92 D 122 D
3 A 33 D 63 B 93 B 123 A
4 A 34 C 64 D 94 A 124 D
5 C 35 B 65 C 95 C 125 C
6 A 36 C 66 B 96 B 126 B
7 A 37 D 67 C 97 B 127 D
8 C 38 C 68 A 98 C 128 D
9 D 39 C 69 B 99 D 129 B
10 B 40 B 70 C 100 C 130 A
11 D 41 D 71 B 101 B 131 D
12 B 42 A 72 B 102 D 132 C
13 A 43 D 73 D 103 A 133 D
14 A 44 C 74 A 104 D 134 C
15 A 45 C 75 B 105 C 135 C
16 B 46 D 76 B 106 B 136 A
17 B 47 D 77 A 107 C 137 A
18 D 48 B 78 D 108 A 138 B
19 C 49 B 79 C 109 C 139 C
20 A 50 B 80 B 110 B 140 A
21 B 51 C 81 C 111 D 141 B
22 B 52 B 82 D 112 D 142 C
23 A 53 C 83 D 113 C 143 A
24 D 54 B 84 A 114 C 144 D
25 D 55 A 85 B 115 D 145 C
26 A 56 D 86 B 116 D 146 B
27 D 57 A 87 C 117 A 147 A
28 D 58 A 88 B 118 C 148 A
29 A 59 B 89 D 119 B 149 A
30 B 60 C 90 B 120 A 150 A