Zoology IFS Paper 1 UPSC 2015 with Solutions
In this article, all questions of Zoology Optional Paper 1 are answered. Click on the question links to view the answers.
This article is part of Synopsis IAS Zoology Optional Course for UPSC IFS.
Zoology Optional UPSC Forest Service Paper 1 2015
Click on the links for the solutions
SECTION-A
1. Write notes on the following:
Zoology 1(a) Significances of conjugation in Paramecium. (IFS 2015, 8 Marks)
Zoology 1(b) Adaptive diversity in polychaetes based on habitat. (IFS 2015, 8 Marks)
Zoology 1(c) Effects of torsion in gastropods and its significance. (IFS 2015, 8 Marks)
Zoology 1(d) Air sacs in pigeon and their functions. (IFS 2015, 8 Marks)
Zoology 1(e) Adaptations of aquatic mammals. (IFS 2015, 8 Marks)
Zoology 2(a) "Evolution of metazoan is the differentiation of cells to perform different functions." Justify this in relation to the cellular organization of hydrozoans. (IFS 2015, 15 Marks)
Zoology 2(b) Discuss the affinities of Onychophora and suggest a suitable place for this in the animal kingdom. (IFS 2015, 15 Marks)
Zoology 2(c) Explain how the structure and life history of Fasciola hepatica are suitable for parasitic mode of life. (IFS 2015, 15 Marks)
Zoology 3(a) Discuss the significance of echinoderm larvae. (IFS 2015, 15 Marks)
Zoology 3(b) Describe the adaptive devices of tropical freshwater fishes to live in marshes and swamps. (IFS 2015, 15 Marks)
Zoology 3(c) Describe the types of skull in Reptilia with neat labelled sketch. (IFS 2015, 10 Marks)
Zoology 4(a) Describe the functions of ovarian hormones. (IFS 2015, 15 Marks)
Zoology 4(b) Compare the aortic arches of reptiles with birds with neat sketch. (IFS 2015, 15 Marks)
Zoology 4(c) Describe different types of jaw suspension in vertebrates with neat sketch. (IFS 2015, 10 Marks)
SECTION-B
5. Write notes on the following:
Zoology 5(a) Ecological effects of pollution. (IFS 2015, 8 Marks)
Zoology 5(b) Biological clock. (IFS 2015, 8 Marks)
Zoology 5(c) Chi-square test. (IFS 2015, 8 Marks)
Zoology 5(d) Cholera. (IFS 2015, 8 Marks)
Zoology 5(e) Pearl culture. (IFS 2015, 8 Marks)
Zoology 6(a) Describe any two sedimentary biogeochemical cycles in nature. (IFS 2015, 10 Marks)
Zoology 6(b) Explain in detail about the methods of studying animal behaviour. (IFS 2015, 15 Marks)
Zoology 6(c) Discuss the importance of forests and mention the conservation steps to be undertaken. (IFS 2015, 15 Marks)
Zoology 7(a) Describe different types of biological rhythms. (IFS 2015, 15 Marks)
Zoology 7(b) Explain the life cycle of sugarcane pest with a sketch and add a note on its management. (IFS 2015, 15 Marks)
Zoology 7(c) Describe the process of ecological succession in an ecosystem. (IFS 2015, 10 Marks)
Zoology 8(a) Define correlation. Explain different types of correlation. Add a note on the uses of correlation. (IFS 2015, 15 Marks)
Zoology 8(b) Describe the causative agent, symptoms, transmission, diagnosis and control measures of AIDS. (IFS 2015, 15 Marks)
Zoology 8(c) Explain the principle, working and application of spectrophotometry. (IFS 2015, 10 Marks)