UPSC Mains ZOOLOGY-PAPER-II 2022

30 Questions • 430 Marks • With Detailed Model Answers

1
10 Marks150 Wordsmedium
Draw the structure of a microtubule and explain its role in chromosomal movements during cell division.
BiologyCell Biology
2
10 Marks150 Wordseasy
What is mutation? Write a brief note on various types of point mutations.
BiologyGenetics
3
10 Marks150 Wordsmedium
Give schematic organization of cosmid. Why is it preferred over plasmid for gene cloning?
BiologyBiotechnology
4
10 Marks150 Wordsmedium
Explain Hardy-Weinberg law of equilibrium and mention the factors that upset the equilibrium.
BiologyGeneticsEvolution
5
10 Marks150 Wordseasy
Write a note on the theory of natural selection.
BiologyEvolution
6
20 Marksmedium
What is rough endoplasmic reticulum (RER)? Describe in detail the various modifications of secretory proteins occurring in the lumen of RER.
BiologyCell Biology
7
15 Marksmedium
Define endomitosis. Describe in detail the structure of a polytene chromosome highlighting the importance of puffs.
BiologyGenetics
8
15 Marksmedium
What is facilitated diffusion? Describe the mechanism of active transport across the plasma membrane with suitable example.
BiologyCell Biology
9
20 Markshard
Sketch out a basic transcription unit and illustrate the RNA polymerase II associated assembly of a transcription initiation complex during expression of a eukaryotic gene.
BiologyMolecular Biology
10
15 Marksmedium
Illustrate the steps of constructing a recombinant c-DNA from an m-RNA.
BiologyBiotechnologyMolecular Biology
11
15 Marksmedium
Stepwise intrinsic mechanism of apoptotic induction
BiologyCell Biology
12
15 Markseasy
Principle of DNA fingerprinting
BiologyBiotechnologyForensic Science
13
20 Marksmedium
What is fossil? Describe the origin and evolution of horse based on the fossil records.
BiologyEvolutionPaleontology
14
15 Marksmedium
Define variation. Describe different types of variations and their role in evolution.
BiologyGeneticsEvolution
15
15 Markseasy
What is biodiversity? Describe the major types of biodiversities found in nature.
BiologyEcologyEnvironment
16
10 Marks150 Wordsmedium
Define immunity. Explain cell-mediated immune response in vertebrates with suitable diagram.
BiologyImmunology
17
10 Marks150 Wordsmedium
Describe the structure and functions of mammalian placenta.
BiologyReproduction
18
10 Marks150 Wordseasy
Explain the functions of neutrophils, basophils and lymphocytes.
BiologyImmunology
19
10 Marks150 Wordsmedium
Illustrate the counter-current mechanism by vasa recta and mention its physiological importance.
BiologyPhysiology
20
10 Marks150 Wordsmedium
Define biogenetic law. Write the characteristics of Haeckel's theory of recapitulation.
BiologyEvolutionEmbryology
21
20 Markshard
Draw the molecular structure of ATP synthase and diagrammatically explain the chemiosmotic concept of ATP synthesis.
BiologyBiochemistry
22
15 Markseasy
A = T and G = C base pairing as a part of DNA double strand
BiologyMolecular Biology
23
15 Marksmedium
Michaelis-Menten kinetic pattern of an enzymatic reaction
BiologyBiochemistry
24
15 Marksmedium
Explain the cellular mechanism of action of steroid hormones.
BiologyPhysiology
25
20 Marksmedium
What are intestinal glands? Describe the roles of intestinal juices in digestion and absorption of food.
BiologyPhysiology
26
15 Marksmedium
Define thermoregulation. How do homeotherms regulate body temperature in hot and cold climates?
BiologyPhysiology
27
15 Marksmedium
Draw the structure of retina and explain the mechanism of vision in mammalian eye.
BiologyPhysiology
28
20 Marksmedium
What is stem cell? Discuss the types of stem cells and their application in therapeutic uses in human.
BiologyBiotechnologyMedicine
29
15 Marksmedium
Explain the mechanism of spermatogenesis in mammals with suitable diagram.
BiologyReproduction
30
15 Marksmedium
Describe the hormonal regulation of metamorphosis in amphibians.
BiologyPhysiologyDevelopmental Biology