Zoology IAS Paper 1 UPSC 2018 with Solutions

Zoology Paper 1 UPSC 2018 - Question Paper with Solutions 

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SECTION-A

1. Write notes on the following in about 150 words each:

Zoology 1a Protostomes and Deuterostomes. (IAS 2018/10 Marks)

Zoology 1b Peripatus. (IAS 2018/10 Marks)

Zoology 1c Paedomorphosis. (IAS 2018/10 Marks)

Zoology 1d Status of Sphenodon. (IAS 2018/10 Marks)

Zoology 1e General characters of Cetaceans and Primates. (IAS 2018/10 Marks)

Zoology 2a Describe the Integumentary derivatives in Mammals along with labelled diagrams. (IAS 2018/20 Marks)

Zoology 2b Give an account of the structure and life cycle of Wucheraria bancrofti. Add a note on the pathogenecity and control of the disease caused by this parasite. (IAS 2018/15 Marks)

Zoology 2c What is retrogressive metamorphosis? Give an illustrated account of this phenomenon in Herdmania. Also write a note on its affinities. (IAS 2018/15 Marks)

Zoology 3a Describe different larval forms of Echinoderms and comment on their evolutionary significance. (IAS 2018/20 Marks)

Zoology 3b Explain HPA axis. Draw a transverse section of the Adrenal gland and describe the functions of its different hormones. (IAS 2018/15 Marks)

Zoology 3c Give an illustrated account of the life cycle of Plasmodium vivax. (IAS 2018/15 Marks)

Zoology 4a Give an illustrated account of different types of mouth parts in insects and write a note on their functional significance. (IAS 2018/20 Marks)

Zoology 4b Give an account of Migration in birds. Add a note on the problems faced by them during migration. (IAS 2018/15 Marks)

Zoology 4c With the help of labelled diagrams only, explain the structure and different stages of the life cycle of Obelia (no description is required). With reference to Obelia, also explain the polymorphism and the status of metagenesis. (IAS 2018/15 Marks)

SECTION-B

5. Write notes on the following in about 150 words each:

Zoology 5a Ozone layer depletion. (IAS 2018/10 Marks)

Zoology 5b Population dynamics. (IAS 2018/10 Marks)

Zoology 5c Endemism with reference to India. (IAS 2018/10 Marks)

Zoology 5d Habituation and Conditioning. (IAS 2018/10 Marks)

Zoology 5e PCR. (IAS 2018/10 Marks)

Zoology 6a What is ecological succession? Give an account of the causes, types and general process of ecological succession in nature. (IAS 2018/20 Marks)

Zoology 6b What is eusocialism? Describe this phenomenon with reference to Honey Bees. (IAS 2018/15 Marks)

Zoology 6c What is the systemic position of rice pest? Give an account of its life cycle and the damage caused by this pest. Write a note on the measure for its prevention and control. (IAS 2018/15 Marks)

Zoology 7a Give an account of sources, impacts and prevention of air pollution. Comment on Montreal and Kyoto protocol also. (IAS 2018/20 Marks)

Zoology 7b What is "Lac-culture"? Explain the methodology employed in lac-culture. Also describe the uses of lac. (IAS 2018/15 Marks)

Zoology 7c What is resolution of a microscope? Comment on the principles of SEM and TEM. Describe the structure, working and applications of any one of the electron microscope in biology. (IAS 2018/15 Marks)

Zoology 8a What is biological rhythm? Give an account of its types and characteristics. What is the role of different factors in their entrainment? (IAS 2018/20 Marks)

Zoology 8b What is Chi-square test? Give a detailed account of the computation of Chi-square for tests of independence, homogeneity and goodness of fit using biological data. (IAS 2018/15 Marks)

Zoology 8c Describe the structure of the pathogen responsible for AIDS. How it is transmitted? Also mention the pathogenesis and prevention of AIDS. (IAS 2018/15 Marks)