Zoology IFS Paper 1 UPSC 2020 with Solutions

Zoology Optional UPSC Forest Service Paper 1 2020

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SECTION-A

1. Write a brief account on each of the following: 

Zoology 1(a) Salient features of Rotifera with suitable examples. (IFS 2020/8 Marks)

Zoology 1(b) Parasitic adaptations of Fasciola. (IFS 2020/8 Marks)

Zoology 1(c) Feeding mechanisms of Mollusca. (IFS 2020/8 Marks)

Zoology 1(d) Skull types of Squamata. (IFS 2020/8 Marks)

Zoology 1(e) Air-breathing fishes. (IFS 2020/8 Marks)

Zoology 2(a) What are Great Barrier Reefs? Describe how climate change influences coral reef formation. (IFS 2020/15 Marks)

Zoology 2(b) Write an account on recent system of animal classification. Outline its differences from earlier empirical approach(es). (IFS 2020/15 Marks)

Zoology 2(c) Describe the life cycle of Nereis. (IFS 2020/10 Marks)

Zoology 3(a) Write an account on modification of mouthparts in Insecta. Give suitable examples and diagrams. (IFS 2020/15 Marks)

Zoology 3(b) Discuss that Sphenodon is the most primitive and Crocodile is the most advanced of all living reptilians. (IFS 2020/15 Marks)

Zoology 3(c) Polychaetes exhibit different modes of life adapted to different habitats. Elaborate. (IFS 2020/10 Marks)

Zoology 4(a) Enumerate the functions and main components of endoskeleton of vertebraten. Give an account on the types of jaw suspensoria with suitable diagrams. (IFS 2020/15 Marks)

Zoology 4(b) Describe the structural organization of thyroid and parathyroid glands in different vertebrate groups with a note on the hormone-producing cells and hormones. (IFS 2020/15 Marks)

Zoology 4(c) Herdmania is primitive and degenerate descendant of ancestral chordates. Discuss (IFS 2020/10 Marks)

SECTION B

5. Differentiate between the following:

Zoology 5(a) Biomes and Ecotones. (IFS 2020/8 Marks)

Zoology 5(b) Ecto and Endo-parasites of cattle. (IFS 2020/8 Marks)

Zoology 5(c) Pyrilla and Achaea pests. (IFS 2020/8 Marks)

Zoology 5(d) Spectrophotometry and Flame photometry. (IFS 2020/8 Marks)

Zoology 5(e) Polyculture and Integrated fish farming. (IFS 2020/8 Marks)

Zoology 6(a) What is ecological succession? Explain the causes and theories of ecological succession. (IFS 2020/15 Marks)

Zoology 6(b) Define apiculture. Explain the methodology, status and scope of apiculture in India. (IFS 2020/15 Marks)

Zoology 6(c) Describe the principle and application of ANOVA. (IFS 2020/10 Marks)

Zoology 7(a) With suitable examples, explain different methods of studying animal behaviour. (IFS 2020/15 Marks)

Zoology 7(b) Primates exhibit a system of social hierarchy. Explain it in the context of territoriality and dominance. (IFS 2020/15 Marks)

Zoology 7(c) Write about the pathogenicity of cholera with a note on control measures. (IFS 2020/10 Marks)

Zoology 8(a) Explain the importance of fisheries in India. Write about the conservation strategies of finfish and shellfish. (IFS 2020/15 Marks)

Zoology 8(b) Describe the role of hormones in prey-predator detection and predator tactics. (IFS 2020/15 Marks)

Zoology 8(c) Define population. Explain the characteristics of a population. (IFS 2020/10 Marks)