Zoology IFS Paper 1 UPSC 2024 with Solutions

Zoology Optional UPSC Forest Service Paper 1 2024

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SECTION A

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

Zoology 1(a) Role of fins in fish locomotion. (IFS 2024/8 Marks)

Zoology 1(b) Structure and mechanism of action of cnidoblasts. (IFS 2024/8 Marks)

Zoology 1(c) General features of egg-laying mammals and pouched mammals. (IFS 2024/8 Marks)

Zoology 1(d) Affinities of Balanoglossus. (IFS 2024/8 Marks)

Zoology 1(e) Structure of internal ear in mammals. (IFS 2024/8 Marks)

Zoology 2(a) Classify phylum Mollusca up to class level and mention characteristic features of each class with relevant examples. (IFS 2024/15 Marks)

Zoology 2(b) Draw a labelled transverse section of pancreas and comment on the role of various pancreatic hormones. (IFS 2024/15 Marks)

Zoology 2(c) Describe the structure and role of book-lungs in scorpions. (IFS 2024/10 Marks)

Zoology 3(a) With the help of a labelled diagram, describe the life history of Leishmania. (IFS 2024/15 Marks)

Zoology 3(b) Discuss the concept of metamerism in annelids with relevant examples. (IFS 2024/15 Marks)

Zoology 3(c) Explain the functions of mammalian integument. (IFS 2024/10 Marks)

Zoology 4(a) Describe the structural peculiarities of larval forms in Echinoderms. (IFS 2024/15 Marks)

Zoology 4(b) Give an account of the various skeletal structures in sponges. (IFS 2024/15 Marks)

Zoology 4(c) "Birds are called glorified reptiles." Comment. (IFS 2024/10 Marks)

SECTION B

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

Zoology 5(a) Role of mosquitoes as vectors of human diseases. (IFS 2024/8 Marks)

Zoology 5(b) Pearl culture in freshwater. (IFS 2024/8 Marks)

Zoology 5(c) Principle and applications of spectrophotometry. (IFS 2024/8 Marks)

Zoology 5(d) Acid rain and its impact on biosphere. (IFS 2024/8 Marks)

Zoology 5(e) Habituation behaviour in animals. (IFS 2024/8 Marks)

Zoology 6(a) Give an account of gastro-intestinal nematodes of cattle and briefly discuss their pathogenicity. (IFS 2024/15 Marks)

Zoology 6(b) Explain various measures implemented by the government to manage vehicular pollution in India. (IFS 2024/15 Marks)

Zoology 6(c) Discuss different sign stimuli used by animals and comment on their adaptive significance. (IFS 2024/15 Marks)

Zoology 7(a) Describe the principle, working and applications of Scanning Electron Microscopy. (IFS 2024/15 Marks)

Zoology 7(b) What is meant by communicable diseases? Describe the pathogenicity, clinical manifestation and prevention of cholera. (IFS 2024/15 Marks)

Zoology 7(c) What is meant by global warming? How is it impacting the environment in the context of greenhouse gases? (IFS 2024/10 Marks)

Zoology 8(a) List various population characteristics. Explain J-shaped and S-shaped growth forms with suitable examples. (IFS 2024/15 Marks)

Zoology 8(b) Giving suitable examples, explain the concept of homing in animals. (IFS 2024/15 Marks)

Zoology 8(c) Explain null hypothesis and its application in Biology. (IFS 2024/10 Marks)