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C.S.E. ZOOLOGY SAMPLE QUESTION PAPER FOR PRELIMINARY EXAMINATION

C.S.E. ZOOLOGY SAMPLE QUESTION PAPER FOR PRELIMINARY EXAMINATION

C.S.E. ZOOLOGY SAMPLE QUESTION PAPER FOR PRELIMINARY EXAMINATION

Two Hours Maximum Marks: 300

1. Which of the following are the characteristics of prokaryotes?

(a) Single chromosome made up of nucleic acid complexed with histone and 70 S ribosome comprised of 30 S and 50 S.
(b) Single chromosome made up of naked nucleic acid and 70 S ribosome comprised of 30 Sand 50 S.
(c) Single chromosome made up of nucleic acid complexed with histone and 80 S ribosome comprised of 40 S and 50 S.
(d) Single chromosome made up of naked nucleic acid and 80 S ribosome comprised 30 Sand 50 S.

 

2. The amount of DNA in G1 phase of cell cycle is
(a) Same as found in G2 phase
(b) Half the amount found in G2 phase
(c) Double the amount found in G2 phase
(d) Four times the amount found in G2 phase

 

3. Consider the following statements:
I. Friedrich Miescher first isolated nucleic acids from pus cells.
2. Hershey and Chase showed through experiment that genetic material was DNA and not protein.
3. Meselson and Stahl proved the semi-conservative replication of DNA.

Which of the statements given above are correct?
(a) 1 and 2 (b) 2 and 3
(c) 1 and 3 (d) 1,2 and 3

 

4. The nucleolar organiser is located on the chromosome in the region of
(a) Primary constriction (b) Secondary constriction
(c) Kinetochore (d) Telomere

 

5. During cell-cycle, the duration of which ofthe following phases is the shortest?
(a) Mitosis (b) G. phase
(c) S phase (d) G2 phase

 

6. Prions are disease causing agents composed of
(a) DNA and protein. (b) DNA
(c) RNA (d) Protein

 

7. Consider the following statements:
I. In the lampbrush chromosomes of am phibian oocytes, the loops are engaged in the transcription.
2. In polytene chromosomes, the puffs are the sites of mRNA formation.

Which of the statements given above is/are correct?
(a) I only (b) 2 only
(c) Both I and 2 (d) Neither I nor 2

 

8. Which one among the following has the largest number of chromosomes?
(a) Cat (c) Man
(b) Chicken (d) Rat

 

9. Consider the following statements regarding a DNA segment 1000 base pair long:
1. It measures 3400 A.
2. It has 10 complete turns. .
3. It has 100 nucleotides.
4. The RNA synthesized from it carries 1000 nucleotides.

Which of the statements given above are correct?
(a) I and 2 (b) 3 and 4
(c) I and 4 (d) 1, 3 and 4

 

10. Which types of specialized sequences are carried at both ends of linear chromosomes for faithful DNA replication, aging and maintaining polarity?

(a) Satellites (b) Telomeres
(c) Organisers (d) Repetitive sequences

 

12. Which one of the following combinations of structural features are expected to be present in a secretory cell?

(a) Well developed rough endoplasmic reticulum and prominent Golgi bodies
(b) Abundant Iysosomes and secretory granules
(c) Enlarged nucleus and well developed rough endoplasmic reticulum
(d) Well developed smooth endoplasmic reticulum and secretory granules

 

13. A couple with normal vision had colour blind father each. What is the percentage of probability that the daughter of the couple is colour blind?
(a) 100% (b) 50%
(c) 25% (d) 0

 

14. How many molecules of ATP would be synthesised if one pyruvate molecule passes through the oxidative steps?
(a) 12 (b) 14
(c) 24 (d) 28

 

16. Consider the following statements:

1. Peroxisomes contain amino acid oxidases, urate oxidases and catalases.
2. In mitochondria, the Krebs-cycle reactions occur in the outer mitochondrial membrane.

Which of the statements given above is/are correct?
(a) I only (b) 2 only
(c) Both I and 2 (d) Neither 1 nor 2

 

17. Sickle cell anemia is due to the substitution of
(a) Glutamic acid for valine at 6th position in beta-chain
(b) Valine for glutamic acid at 6th position in beta-chain
(c) Valine for glutamic acid at 5th position in beta-chain
(d) Glutamic acid for valine at 5th position in beta-chain

 

18. Consider the following pairs:
1. Ribosomes : Protein synthesis
2. Okazaki fragment : RNA synthesis
3. Ligase : DNA synthesis

Which of the above pairs is/are correctly matched?
(a) 1 only (b) 2 and 3
(c) I and 3' (d) 1, 2 and 3

 

19. Philadelphia chromosome refers to the translocation between the long arms of
(a) Chromosomes 8 and 18
(b) Chromosomes 9 and 18
(c) Chromosomes 9 and 22
(d) Chromosomes 6 and 22

 

20. Consider the following statements with reference to prokaryotic translation:.
1. Charged tRNA carries amino acid at 5 end.
2. Charged tRNA enters the ribosome through A site during elongation of polypeptides.
3. Ribosomes can accommodate 3 mRNA codons at a time.
4. mRNA is translated from 5' -> 3 direction.

Which of the statements given above. are correct?
(a) 1 and 2 (b) 3 and 4
(c) 1 and 3 (d) 2 and 4

Two Hours Maximum Marks: 300

21. A form of chromosomal aberration that involves the fusion of long arms of acrocentric chromosomes at the centromere is known as

(a) Reciprocal translocation (b) Isochromosome
(c) Robertsonian translocation (d) Centromeric fusion

 

23. Consider the following characteristics of coelomates:
1. Radial symmetry
2. Asymmetry
3. Origin of mouth
4. Embryonic cleavage pattern
5. Coelom formation

If basic differences are to be found between protostome coelomates and deuterostome coelomates, consideration of which of the above characteristics will suffice?
(a) 1, 3, 4 and 5 (b) 2, 3, 4 and 5
(c) 1, 3 and 4 (d) 5 only

 

24. In which among the given minor phyla is the alimentary canal U shaped?
(a) Bryozoa only
(b) Chaetognatha and Phoronida
(c) Bryozoa and Phoronida
(d) Rotifera and Gastrotricha

 

26. Sea lily is the stalked echinoderm of the class
(a) Articulata (b) Asterozoa
(c) Crinoidea (d) Echinozoa

 

27. Which one of the following annelids is phosphorescent in the dark?
(a) Aphrodite (b) Chaetopterus
(c) Syllis (d) Sabella

 

28. Which group of following animals possesses mesenchymal coelom?
(a) Most Protostomia (b) Deuterostomia
(c) Phoronida. (d) Nemertina

 

29. Consider the following anatomical structures:
1. Single dorsal tubular nerve cord
2. Notochord
3. Gill slits in pharynx
4. Brain

The outstanding characteristics which distinguish chordates from other animals are -
(a) 1 and 2 (b) 1 and 4
(c) 1, 2 and 3 (d) 2, 3 and 4

 

30. Which one among the following undertakes the longest migration?
(a) Arctic tern (b) Flamingo
(c) Painted stork (d) Pelican

 

32. In turtle, the correct sequence of bony plates, on each side of the plastron in the antero-posterior direction is

(a) Humeral - pectoral - gular - abdominal - femoral anal
(b) Gular - humeral - pectoral - abdominal - femoral anal
(c) Pectoral - abdominal - gular - anal
(d) Abdominal - gular - femoral - anal

 

33. In origin, the choanocytes, the flagellated cell present in the radial canal of sponges, are
(a) Ectodermal (b) Mesodermal
(c) Endodermal (d) Mesenchymal

 

34. When does the developing embryo of Hydra drop from the body of the parent?

(a) Soon after formation of zygote
(b) After formation of blastula
(c) After formation of gastrula
(d) Only after it has developed into young Hyndra

 

35. Metagenesis in Obelia signifies the
(a) Alternation of generations between free swimming diploid medusoid and diploid polypoid stage
(b) Alternation of generations between haploid gametogenetic medusa and polypoid stage
(c) Formation of medusa on gonangium 
(d) Formation of polyp by budding

 

36. Which one of the following phenomena occurs during reproduction in Neanthes?

(a) Endomixis (b) Epitoky
(c) Hectocotylization (d) Metagenesis

 

37. Consider the following statements:
Pheretima posthuma is characterized by 

1. true coelomic body cavity lined by coelomic epithelium.
2. closed circulatory system.
3. lateal hearts with valves.

Which of the statements given above are correct?
(a) I and 2 (b) 2 and 3
(c) I and 3 (d) I, 2 and 3.

 

38. Which of the following explain the functions of statocyst in Prawn?
(a) Locomotion and touch
(b) Smell and movement
(c) Smell and equilibrium
(d) Orientation and equilibrium

 

39. Madreporite, the circular, flat, calcareous plate in Asterias sp. is situated near the

(a) anus on the aboral surface
(b) mouth on the oral surface
(c) side of the arms on the 'Oral surface
(d) the junction of the arms on the aboral surface

 

40. Consider the following statements regarding Balanoglossus:
1. The eggs are fertilized outside .the body and the development is indirect.
2. Full grown tornaria larva has three ciliated bands, two apical plates and a pair of pigmented eye-spots.
3. Tornaria larva is a free-swimming larval stag

Which of the statements given above are correct?
(a) 1 and 2 (b) 2 and 3
(c) I and 3 (d) 1, 2 and 3

Two Hours Maximum Marks: 300

41. The osphradium in Pila sp. is the organ responsible for
(a) Tactile activity (b) Equilibrium
(c) Sensing light (d) Chemor-->ception

 

42. Which of the following is a reptilian feature of a prototherian mammal?
(a) Absence of pinna
(b) Presence of cloaca
(c) Vertebrate without epiphysis
(d) Single and uncoiled cochlea

 

43. Which of the following functions is served by prototrichs in Calotes?:.
(a) Defence (b) Sensory
(c) Capturing prey (d) Thermoregulation'

 

44. Which one of the following is the main constituent of Pearl?
(a) Calcium carbonate (b) Magnesium carbonate
(c) Calcium oxide (d) Magnesium sulphate

45. Which one of the following reptiles is an edentate?
(a) Chamaeleon (b) Garden lizard
(c) Gecko (d) Turtle

 

46. Avian respiratory system is characterised by the presence of membranous air-sacs. Such structure is also observed as a part. of respiratory system in some non-avian vertebrates. Which one of the following possesses such airsacs?

(a) Dolphin (b) Toad
(c) Chamaeleon (d) Pterpus

 

47. Consider the following:
1. Endothelium of foetal blood capillaries.
2. Connective tissue sun-ounding foetal blood capillaries.
3. Foetal epithelium.
4. Maternal epithelium.
5. Connective tissue surrounding maternal blood capillaries.
6. Endothelium of maternal blood capillaries.

In the case of humans, the placenta comprises which of the above?
(a) 1, 2, 3, 4, 5 and 6 (b) 1, 5 and 6
(c) 1 and 2 (d) 2 and 6

 

48. Consider the following statements:
1. In the cranium of Rana, parietal fossa is present.
2. In the cranium of Columba, parietal foramen is absent. J Which of the statements given above is/are correct?

(a) 1 only. (b) 2 only
(c) Both I and 2 (d) Neither 1 nor 2

 

49. Which one of the following is not under the direct control of pituitary gland with respect to the regulation of its secretory function?

(a) Adrenal cortex (b) Adrenal medulla
(c) Thyroid (d) Testis

 

50. If the glomerular capillary pressure is 60 mm Hg, the pressure in Bowman's space 10 mm Hg and osmotic pressure 30 mm Hg, what would be the effective filtration pressure?
(a) 20 mm Hg (b) 40 mm Hg
(c) 60 mm Hg (d) 80 mm Hg

 

51. Which one of the following increases the uptake of sodium ions and water in the kidney with simultaneous elimination of potassium ions?
(a) Vasopressin (b) Renin
(c) Parathormone (d) Aldosterone

 

52. Consider the following statements:
Parasympathetic nervous system is characterized by 

1. Acetylcholine as neurotransmitter.
2. 'Fight or flight' activities.
3. Longer preganglionic fibres.
4. Longer postganglionic fibres.
5. Arising from cranio-sacral portion.

Which of the statements given above are correct?
(a) 1, 2 and 3 (b) 2 and 4
(c) 1,3 and 5 (d) 2,3 and 5

 

54. Which one of the following categories of enzymes converts triglycerides into glycerol and fatty acids?

(a) Hydrolase (b) Lyase
(c) Oxidoreductase (d) Transferase

 

55. Consider the following statements with reference to the only ape found in India i.e. Hylobates hoolock:

1. In India, it lives only in north-eastern region.
2. Its arms are more than double the length of its legs measured from hip heel.
3. It is purely herbivorous.

Which of the statements given above is/are correct?'
(a) 1 only (b) 1 and 2
(c) 2 and 3 (d) 1, 2 and 3

 

56. Which one of the following pairs is not correctly matched?
Wildlife Sanctuary State

(a) Eturnagaram - Tamil Nadu
(b) Bhagvan Mahavir - Goa
(c) Nandini - Jammu & Kashmir
(d) Narayan Sarovar - Gujarat

 

57. The sequence of transfer of electrons during biological oxidation of a substrate in mitochondrian is

(a) NAD -> Cytochrome a  -> Cytochrome c  -> O2,
(b) FAD  -> Cytochrome c  -> Cytochrome b  -> NAD  -> O2
(c) NAD  -> FAD  -> Cytochrome b  -> Cytochrome c  -> Cytochrome a3  -> O2
(d) FAD  -> NAD  -> Cytochrome c  -> Cytochrome a 3  -> O2

 

58. Consider the following statements:
Vitamin A deficiency in humans can lead to

1. atrophy of epithelial cells.
2. damage to intestinal mucosa.
3. defects in the dentine of teeth.

Which of the statements given is / are correct?
(a) 1 only (b) 1 and 2
(c) 2 and 3 (d) 1, 2 and 3

 

59. Which one of the following is a non-essential amino acid in the case of human beings?
(a) Arginine (b) Histidine
(c) Leucihe (d) Serine

 

61. Which one of the following is the most fundamental characteristic of the excitatory post-synaptic potential?

(a) Decreasing sodium ions
(b) Incresed permeability to ions
(c) Polarisation of membrane
(d) Incresed loss of potassium ions

Consider the following statements:
1. Adenosine triphosphate is made up of base adenine, sugar xylose and three phosphate groups.
2. Adenosine triphosphate has three ionizable protons in its condensed phosphate groups.

Which of he statements given above -is/are correct?
(a) 1 only (b) 2 only
(c) Both 1 and 2 (d) Neither I nor 2

Two Hours Maximum Marks: 300

62. Hypoprothrombinemia is due to the deficiency of 
(a) Vitamine A (b) Vitamine B complex
(c) Vitamine E (d) Vitamine K

 

63. Consider the following:
1. Malate. 2. Succinate
3. Fumarate

What is the correct sequence of the above metabolites in citric acid cycle?
(a) 1 - 2 – 3 (b) 2 - 1 - 3
(c) 3 - 2 – 1 (d) 2 - 3 - 1

 

64. The hormones response are responsible for the "fight-or-flight"
(a) Cortisol and aldosterone
(b) Corticosterone and aldosterone
(c) Aldosterone and nor-adrenalin
(d) Adrenalin and nor-adrenalin

 

65. Consider the following statements: .
1. Chymotrypsinogen is converted into chymotrypsin by trypsin.
2. Cholecystokinin is secreted by stomach.
3. Pepsin acts on peptide linkage in which tyrosine and phenylalanine are involved.

Which of the statements given above are correct?
(a) I and 2 (b) 2 and 3
(c) I and 3 (d) I, 2 and 3

66. In glycolysis, which' one of the following is the substrate I for the enzyme enolase?

(a) Fructose 1-6 biphosphate
(b) 3-phosphoglyceraldehyde
(c) I, 3-biphosphoglyceric acid
(d) 2-phosphoglyceric acid

 

67. Consider the following hormones:
1. Thyrotrophin releasing hormone (TRH)
2. Thyroid stimulating hormone (TSH)
3. Thyroxine (T 4)

68. What is the correct sequence of the release of these hormones?
(a) I - 2 - 3 (b) 2 - I - 3
(c) 2 - 3 - I (d) I - 3 - 2

 

68. How many fused hydrocarbon rings does the steroid nucleus consist of?
(a) Two (b) Three
(c) Four (d) Six

 

69. Which one of the following statements is correct?

(a) Perilymph is positively charged and endolymph is negatively charged.
(b) Perilymph and endolymph are positively charged.
(c) Perilymph is negatively charged and endolymph is positively charged.
(d) Perilymph and endolymph are negatively charged.

 

70. Consider the following statements:
The tertiary structure of proteins is stabilized by

1. disulphide linkage
2. hydrogen bonding
3. electrostatic bonds between positively and negatively charged groups

Which 'of the statements give!1 above are correct?
(a) I and 2 (b) 2 and 3
(c) 1 and 3 (d) 1, 2 and 3

 

71. Consider the following statements:
Pheromones help in

l. communication within species.
2. marking the territory.
3. defence mechanism.

Which of the statements given above are correct?
(a) I and 2 (b) 2 and 3.
(c) l and 3 (d) 1, 2 and 3

72. The axial filament of a mammalian sperm consists of
(a) 9 double peripheral and 2 single central microtubules
(b) 9 single peripheral and 2 double central microtubules
(c) 2 single peripheral and 9 double central microtubules
(d) 2 double peripheral and 9 single central microtubules

 

73. Which one of the following is not applicable to the retrogressivemetamorphosis of Ascidian tadpole?

(a) Reduction of size of the pharynx
(b) Dwindling of notochord
(c) Development of sessile character
(d) Shortening of tail

 

74. Which one of the following sets is of ectodermal derivative?
(a) Brain, spinal cord, pituitary, thyroid
(b) Brain, spinal cord, liver, pancreas
(c) Brain, spinal cord, pituitary, pineal
(d) Heart, eye, dentine, skeleton


75. Regarding the appearance of the given organs in a tapdole of frog, which
one of the following is the correct sequence?

(a) Mouth, external gill, fore limb, hind limb
(b) Mouth, external gill, hind limb, fore limb
(c) External gill, mouth, hind limb, fore limb
(d) External gill, mouth, fore limb, hind limb

 

76. The chorion, originates from
(a) Ectoderm
(b) Endoderm
(c) Extra-embryonic ectoderm
(d) Somatic mesoderm

 

77. The third cleavage in the development of frog is
(a) Holoblastic and equatorial
(b) Holoblastic and un equatorial
(c) Vertical and equatorial
(d) Meroblastic and vertical

 

78. In mammals, the extra-embryonic structure is composed of
(a) Chorioallantois and trophoblast
(b) Amnion and allantois
(c) Yolk
(d) Yolk and amnion

 

79. In which among the following is bidiscoidal placenta present?
(a) Cat (b) Dog
(c) Human (d) Monkey

80. The placenta in mammals secretes
(a) Progesterone only
(b) Estradiol only
(c) Relaxin and estradiol
(d) Progesterone, estradiol and relaxin

81. Which one of the following studies strongly supports Neo-Darwinism theory?
(a) Moletular genetics (b) Paleontology
(c) Comparative anatomy (d) Functional morphology

Two Hours Maximum Marks: 300

82. Expansion of which one of the following regions of brain during evolution is responsible for the greater intelligence of man?
(a) Allocortex (b) Neocortex
(c) Cerebellum (d) Juxtallocortex

 

83. What Was the principal missing element in Darwin's concept of evolution?
(a) Knowledge of heredity and variation
(b) Concept of missing links (c) Convincing fossil records
(d) Concrete evidence for the operation of Natural Selection

 

84. The ineffectiveness of many antibiotics to bacteria today is most closely associated with
(a) F-plasmid (b) R-plasmid
(c) Catabolite repression (d) Bacterial transformations

 

85. The direct evidence on the evolution of horse is provided by the study of
(a) Recapitulation (b) Geographic distribution
(c) Fossils (d) Homology of the limbs


87. Which one of the following is the vector of Trypanosomiasis?
 
(a) Tsetse fly (b) Phlebotamus fly.
(c) White fly (d) Fire fly

 

88. Which part of the worldo is regarded as the most probable place of origin of ancestor of humans?
(a) Java-Sumatra (b) China
(c) South Asia (d) South Africa

 

89. In the case of frog, the structure known as 'grey crescent' is found in
(a) Fertilized egg (b) Unfertilized egg
(c) Brain (d) Eye





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27 Sep, 2020, 16:14:01 PM