Zoology IFS Paper 2 UPSC 2014 with Solutions
In this article, all questions of Zoology Optional Paper 2 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 2 2014
Click on the links for the solutions
SECTION-A
1. Write notes on the following:
Zoology 1(a) Sex determination in nematodes. (IFS 2014, 8 Marks)
Zoology 1(b) Protective mimicry and warning mimicry. (IFS 2014, 8 Marks)
Zoology 1(c) Convergent evolution and divergent evolution. (IFS 2014, 8 Marks)
Zoology 1(d) Post-transcriptional gene regulation. (IFS 2014, 8 Marks)
Zoology 1(e) Concept of 'cladistics'. (IFS 2014, 8 Marks)
Zoology 2(a) Considering the inheritance of earlobes in humans in a given population, 84% of people have free earlobes, whereas 16% of people have attached earlobes. Calculate the frequencies of F and f alleles and frequencies of three different genotypes with reference to Hardy-Weinberg law. (IFS 2014, 20 Marks)
Zoology 2(b) Describe the process of sex determination in Drosophila with emphasis on polyploidy and gynandromorphism. (IFS 2014, 20 Marks)
Zoology 3(a) What is meant by 'C-value' paradox? Describe the ultrastructure of chromatin with emphasis on nucleosome and solenoid model of chromatin. (IFS 2014, 20 Marks)
Zoology 3(b) What are fossils? Describe the process of fossilization in brief. Discuss the evolution of elephant in brief. Draw suitable diagrams. Prepare a tabulated account on one separate sheet. (IFS 2014, 20 Marks)
Zoology 4(a) What is a congenital disease? Enlist various congenital diseases of humans. Discuss each one by mentioning symptoms, consequences and remedial measures. (IFS 2014, 20 Marks)
Zoology 4(b) What is genome mapping? Discuss in brief the progress made in understanding human genome. Provide state-of-the-art information. Discuss the applicability advantage of exploring genome mapping of plants and animals. (IFS 2014, 20 Marks)
SECTION-B
5. Define and differentiate the following in not more than 150 words each:
Zoology 5(a) Polyunsaturated fatty acids (PUFA) and Highly unsaturated fatty acids (HUFA). (IFS 2014, 8 Marks)
Zoology 5(b) Tropomyosin and Troponin. (IFS 2014, 8 Marks)
Zoology 5(c) Creatine and Creatinine. (IFS 2014, 8 Marks)
Zoology 5(d) Vision and Olfaction in man. (IFS 2014, 8 Marks)
Zoology 5(e) Neoteny and Paedogenesis. (IFS 2014, 8 Marks)
Zoology 6(a) What is meant by teratogenesis? Describe in detail about genetic and environmental teratogenesis. Give suitable examples. (IFS 2014, 20 Marks)
Zoology 6(b) What are hormones? Who discovered these and in which year? Provide a tabulated chart of their classification. Briefly narrate biosynthesis and functions of steroid hormones. (IFS 2014, 20 Marks)
Zoology 7(a) How are airborne chemicals perceived? Describe the structure and physiology of specific receptors concerned with olfaction in humans. (IFS 2014, 20 Marks)
Zoology 7(b) Describe the physiological role of gonadotrophic hormones on puberty and the regulation of menstrual cycle in women. (IFS 2014, 20 Marks)
Zoology 8(a) Discuss organogenesis of eye with associated sequential steps. Support your answer with diagrams in a tandem manner. (IFS 2014, 20 Marks)
Zoology 8(b) Define synapse and different types of synapses. Mention different types of neurotransmitters and their role in synaptic transmission. (IFS 2014, 20 Marks)