Zoology IAS Paper 2 UPSC 2022 with Solutions

Zoology Paper 2 UPSC 2022 - Question Paper with Solutions 

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Section - A

1. Write your answer in about 150 words for each of the following:

Zoology 1a Draw the structure of a microtubule and explain its role in chromosomal movements during cell division. (IAS 2022/10 Marks)

Zoology 1b What is mutation? Write a brief note on various types of point mutations. (IAS 2022/10 Marks)

Zoology 1c Give schematic organization of cosmid. Why is it preferred over plasmid for gene cloning? (IAS 2022/10 Marks)

Zoology 1d Explain Hardy-Weinberg law of equilibrium and mention the factors that upset the equilibrium. (IAS 2022/10 Marks)

Zoology 1e Write a note on the theory of natural selection. (IAS 2022/10 Marks)

Zoology 2a What is rough endoplasmic reticulum (RER)? Describe in detail the various modifications of secretory proteins occurring in the lumen of RER. (IAS 2022/20 Marks)

Zoology 2b Define endomitosis. Describe in detail the structure of a polytene chromosome highlighting the importance of puffs. (IAS 2022/15 Marks Marks)

Zoology 2c What is facilitated diffusion? Describe the mechanism of active transport across the plasma membrane with suitable example. (IAS 2022/15 Marks Marks)

Zoology 3a 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. (IAS 2022/20 Marks)

Zoology 3b Illustrate the steps of constructing a recombinant c-DNA from an m-RNA. (IAS 2022/15 Marks)

Zoology 3c Explain the following: 

Zoology 3c i Stepwise intrinsic mechanism of apoptotic induction (IAS 2022/7.5 Marks)

Zoology 3c ii Principle of DNA fingerprinting (IAS 2022/7.5 Marks)

Zoology 4a What is fossil? Describe the origin and evolution of horse based on the fossil records. (IAS 2022/20 Marks)

Zoology 4b Define variation. Describe different types of variations and their role in evolution. (IAS 2022/15 Marks Mark)

Zoology 4c What is biodiversity? Describe the major types of biodiversities found in nature. (IAS 2022/15 Marks Marks)

Section - B

5. Write your answer in about 15 Marks0 words for each of the following:

Zoology 5a Define immunity. Explain cell-mediated immune response in vertebrates with suitable diagram. (IAS 2022/10 Marks)

Zoology 5b Describe the structure and functions of mammalian placenta. (IAS 2022/10 Marks)

Zoology 5c Explain the functions of neutrophils, basophils and lymphocytes. (IAS 2022/10 Marks)

Zoology 5d Illustrate the counter-current mechanism by vasa recta and mention its physiological importance. (IAS 2022/10 Marks)

Zoology 5e Define biogenetic law. Write the characteristics of Haeckel's theory of recapitulation. (IAS 2022/10 Marks)

Zoology 6a Draw the molecular structure of ATP synthase and diagrammatically explain the chemiosmotic concept of ATP synthesis. (IAS 2022/20 Marks)

Zoology 6b Illustrate the following:

Zoology 6b i A = T and G = C base pairing as a part of DNA double strand. (IAS 2022/7.5 Marks)

Zoology 6b ii Michaelis-Menten kinetic pattern of an enzymatic reaction. (IAS 2022/7.5 Marks)

Zoology 6c Explain the cellular mechanism of action of steroid hormones. (IAS 2022/15 Marks Marks)

Zoology 7a What are intestinal glands? Describe the roles of intestinal juices in digestion and absorption of food. (IAS 2022/20 Marks)

Zoology 7b Define thermoregulation. How do homeotherms regulate body temperature in hot and cold climates? (IAS 2022/15 Marks)

Zoology 7c Draw the structure of retina and explain the mechanism of vision in mammalian eye. (IAS 2022/15 Marks)

Zoology 8a What is stem cell? Discuss the types of stem cells and their application in therapeutic uses in human. (IAS 2022/20 Marks)

Zoology 8b Explain the mechanism of spermatogenesis in mammals with suitable diagram. (IAS 2022/15 Marks)

Zoology 8c Describe the hormonal regulation of metamorphosis in amphibians. (IAS 2022/15 Marks)