Zoology IFS Paper 1 UPSC 2018 with Solutions

Zoology Optional UPSC Forest Service Paper 1 2018

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SECTION-A

1. Write a brief account of the following:                                

Zoology 1(a) Sol-gel hypothesis of protozoan locomotion (IFS 2018, 8 Marks)

Zoology 1(b)  Spicules in Porifera (IFS 2018, 8 Marks)

Zoology 1(c) Parasitic mode adaptations in nematodes    (IFS 2018, 8 Marks)

Zoology 1(d) Ciliary mode of feeding in Branchiostoma (IFS 2018, 8 Marks)

Zoology 1(e) Phenomenon of Paedomorphosis in Amphibia (IFS 2018, 8 Marks)

Zoology 2(a)  Schematically present the process of conjugation in Paramoecium sp. Comment on its biological significance. (IFS 2018, 15 Marks)

Zoology 2(b) Define metagenesis. Elaborate the process of metagenesis in Obelia with suitable diagram. (IFS 2018, 15 Marks)

Zoology 2(c) Sphenodon is considered to be a living fossil — Justify. (IFS 2018, 10 Marks)

Zoology 3(a) Explain the neuro-endocrine regulation of insect metamorphosis with suitable illustrations. Comment on the role of JH (Juvenile Hormone) in insect metamorphosis. (IFS 2018, 15 Marks)

Zoology 3(b) Give an account of accessory respiratory structures in fishes with a note on their biological significance. (IFS 2018, 15 Marks)

Zoology 3(c) What is emergency hormone? How is the secretion of this hormone being regulated? (IFS 2018, 10 Marks)

Zoology 4(a) Give a comparative account of aortic arches in different Vertebrates with suitable illustrations. (IFS 2018, 15 Marks)

Zoology 4(b)  Peripatus is a living connecting link between Annelida and Arthropoda. Explain. (IFS 2018, 15 Marks)

Zoology 4(c) Give the scientific name of one amphibious mollusc. How does it respire in aquatic medium? (IFS 2018, 10 Marks)

SECTION B

Zoology 5(a) Differentiate between culture and capture fisheries. (IFS 2018, 8 Marks)

Zoology 5((b) Comment on the prospects of Sericulture in India. (IFS 2018, 8 Marks)

Zoology 5((c) Write a brief note on Climax Community. (IFS 2018, 8 Marks)

Zoology 5((d) Distinguish between hormone and pheromone with a note on alarm hormone. (IFS 2018, 8 Marks)

Zoology 5((e) Write a brief note on the principle and applications of a spectrophotometer. (IFS 2018, 8 Marks)

Zoology 6(a) Give an account on the forest types of India. Why do tropical rainforests support a large number of life forms? (IFS 2018, 15 Marks)

Zoology 6(b) What is population growth? Delineate different factors affecting population growth. Distinguish between “J” shaped and “S” shaped growth curve with examples. (IFS 2018, 15 Marks)

Zoology 6(c) Mention the aims and objectives of “Project Tiger”. Comment on its limitations. (IFS 2018, 10 Marks)

Zoology 7(a) Why do birds migrate? Give an account of different methods of navigation during bird migration. (IFS 2018, 15 Marks)

Zoology 7(b) Briefly narrate different techniques of courtship display among birds. (IFS 2018, 15 Marks)

Zoology 7(c) Give an account on the echolocation in bats. (IFS 2018, 10 Marks)

Zoology 8(a) Mention the nature of damage caused by Pyrilla sp. to sugarcane. Describe the lifecycle stages of the said pest with proper diagram. Suggest measures to control the pest. (IFS 2018, 15 Marks)

Zoology 8(b) Name important malaria vectors of India. Elaborate the life cycle of any malaria vector of India. How can the transmission of malaria be checked? (IFS 2018, 15 Marks)

Zoology 8(c) | What is null hypothesis? Elaborate the application of chi square test in biology. (IFS 2018, 10 Marks)