Zoology IFS Paper 1 UPSC 2019 with Solutions

Zoology Optional UPSC Forest Service Paper 1 2019

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SECTION-A

1. Answer the following questions:

Zoology 1(a) Write in brief about the method(s) of ingestion, digestion of food and excretion of wastes in Paramaecium. (IFS 2019/8 Marks)

Zoology 1(b) Define body symmetry. Give its types with examples. (IFS 2019/8 Marks)

Zoology 1(c) Elaborate on the structural organization of compound eye in prawn. (IFS 2019/8 Marks)

Zoology 1(d) Elucidate the structural diversity of shells in molluscs. Also, write their functions. (IFS 2019/8 Marks)

Zoology 1(e) Briefly describe types of dermal scales and their structures in fishes. (IFS 2019/8 Marks)

Zoology 2(a) Describe the structure of human internal ear. Also, explain the mechanism of hearing and balancing. (IFS 2019/15 Marks)

Zoology 2(b) How is Ascariasis caused? Describe the mode of transmission and life history of Ascarias. Give the harmful effects of Ascariasis and its control measures. (IFS 2019/15 Marks)

Zoology 2(c) Explain the structure and mechanism of action of nematocysts in the defense mechanism of coelenterates. (IFS 2019/10 Marks)

Zoology 3(a) Explain the structure of respiratory organs and write the mechanism of terrestrial and aquatic respiration in arthropods. (IFS 2019/15 Marks)

Zoology 3(b) Enlist the distinctive features of various subelasses of Reptilia. Also, write the differentiating characters of poisonous and non-poisonous snakes. (IFS 2019/15 Marks)

Zoology 3(c) Highlight various characteristics of egg-laying mammals, pouched mammals and aquatic mammals. (IFS 2019/10 Marks)

Zoology 4(a) Describe in detail about the structural organization of mammalian pituitary gland with emphasis on its hormones and their functions. (IFS 2019/15 Marks)

Zoology 4(b) Enumerate the general features and parasitic adaptations of Fasciola. (IFS 2019/15 Marks)

Zoology 4(c) Giving suitable examples and diagrams, describe the phenomenon of parental care in Apoda, Anura and Caudata. (IFS 2019/10 Marks)

SECTION B

5. Answer the following questions:

Zoology 5(a) What is greenhouse effect? How does it influence our environment? (IFS 2019/8 Marks)

Zoology 5(b) Explain the principle, working and applications of Geiger - Muller counter. (IFS 2019/8 Marks)

Zoology 5(c) Differentiate between population dispersal and population dispersion. (IFS 2019/8 Marks)

Zoology 5(d) Explain the various methods of lac cultivation. (IFS 2019/8 Marks)

Zoology 5(e) What are biological rhythms? Explain the various types of biological rhythms, citing examples. (IFS 2019/8 Marks)

Zoology 6(a) Explain the biological and non-biological modes of nitrogen fixation. Also, draw the nitrogen cycle. (IFS 2019/15 Marks)

Zoology 6(b) Enlist the various species suitable for prawn culture. Also, describe methods of its seed production and culture techniques. (IFS 2019/15 Marks)

Zoology 6(c) What is correlation ? Give its types. Briefly explain the various methods of calculation of correlation between X and Y variables. (IFS 2019/10 Marks)

Zoology 7(a) Differentiate between primary and secondary pollutants. Describe different sources as well as management methods of gaseous pollutants. (IFS 2019/15 Marks)

Zoology 7(b) Citing examples, explain the different types of social groupings in primates. Also, mention the advantages of group living. (IFS 2019/15 Marks)

Zoology 7(c) Describe the life history and pathogenicity of Pyrilla perpusilla. note on its preventive measures. (IFS 2019/10 Marks)

Zoology 8(a) What is meant by AIDS? How is it transmitted? Comment on the pathology of HIV infection and its preventive measures. Add a note on its present status in India. (IFS 2019/15 Marks)

Zoology 8(b) Write the principle, working and applications of TEM. (IFS 2019/15 Marks)

Zoology 8(c) Differentiate between primary and secondary succession. Explain the various steps involved in primary community succession. (IFS 2019/10 Marks)