Zoology IAS Paper 2 UPSC 2013 with Solutions

Zoology Paper 2 UPSC 2013 - Question Paper with Solutions 

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SECTION-A

Zoology 1a Compare the function of mitochondrial and lysosomal enzymes in cellular metabolism. (IAS 2013, 10 Marks)

Zoology 1b What is interrupted gene? What is its relation with exons and itrons? Explain the functioning of interruped gene in lower eukaryotes. (IAS 2013, 10 Marks) 

Zoology 1c Describe the phenomena of mimesis and crypsis in animal with suitable examples. (IAS 2013, 10 Marks)

Zoology 1d What are sex-linked and sex-limited characters? Explain by suitable examples their, mode of transmission. (IAS 2013, 10 Marks)

Zoology 1e What is taxonomic hierarchy? Explain biodiversity. on the basis of molecular taxonomy using suitable examples. (IAS 2013, 10 Marks)

Zoology 2a Describe the structural organisation of a prokaryotic cell. What are the traits and functions in which it differs from a eukaryotic cell ? (IAS 2013, 20 Marks)

Zoology 2b How are evolutionary patterns and processes affected by the dual operation of mutation and natural selection? Give examples. (IAS 2013, 15 Marks)

Zoology 2c What is recombinant DNA technology? How is it done? Discuss its applications. (IAS 2013, 15 Marks)

Zoology 3a How does the protein synthetic machinery operate in a prokaryote? Mention the various functions of protein in eukaryotes and prokaryotes. (IAS 2013, 15 Marks)

Zoology 3b Using the fossil history of humans, reconstruct the stages of evolution of present day Homo sapiens, mentioning the geological periods as well. (IAS 2013, 20 Marks)

Zoology 3c Which eukaryotes do not contain repetitive DNA? Give a brief account of biological macromolecules found in all living organisms. (IAS 2013, 15 Marks)

Zoology 4a Delineate the production of new combinations of alleles, encoding a novel set of genetic informations. What is its role in genetic engineering ? (IAS 2013, 20 Marks)

Zoology 4b Give an account of the structure and function of the organelles considered unusual in the cell cytoplasm. (IAS 2013, 15 Marks)

Zoology 4c What are RNA genes? State the role of ribozymes and microRNA in protein synthesis. (IAS 2013, 15 Marks)

SECTION-B

Zoology 5a Mention the different steps in the metabolism of iron. What are the functions that require iron? Add a note on the regulatory mechanism that ensure stable titers of irony in the body. (IAS 2013, 10 Marks)

Zoology 5b What is cyclic AMP? How is it derived? Mention the role of cyclic AMP in eukaryotic cells. (IAS 2013, 10 Marks)

Zoology 5c What is Hox gene? Give the properties of Hox Gene and its cluster. What role do they play in humans? (IAS 2013, 10 Marks)

Zoology 5d Describe the short-term and long-term effects of stress on human body. (IAS 2013, 10 Marks)

Zoology 5e With suitable illustrations delineate the role of triiodothyronine and tetraiodothyronine in amphibian metamorphosis. (IAS 2013, 10 Marks)

Zoology 6a Describe the mechanism of synthesis of protein and steroid hormones. How do they affect cellular activity. (IAS 2013, 15 Marks)

Zoology 6b Draw a labelled diagram of human eye and discuss the functions of each layer. Mention the role of eye a pigments in visual perception under light and dark conditions. (IAS 2013, 15 Marks)

Zoology 6c Describe-the role of neuro-endocrine factors and Sertoli cell secretions on spermatogenic functions of human seminiferous tubules. (IAS 2013, 20 Marks)

Zoology 7a Mention the hypothalamic-adenohypophysial secretions that stimulate sustain and regulate adrenal cortex functions-Add a note on feedback systems. (IAS 2013, 15 Marks)

Zoology 7b Using villi as the basis of classifications, describe the various types of placenta in eutherian mammals. Add a note on placental hormones and their role in pregnancy and birth. (IAS 2013, 20 Marks)

Zoology 7c What as Hardy-Weinberg's law? Give examples to establish its validity and limitations. (IAS 2013, 15 Marks)

Zoology 8a What are erythroid cells? Explain the RBC lineage in balancing haemoglobin manufacture. (IAS 2013, 15 Marks)

Zoology 8b Differentiate between puberty and menopause and discuss their neuro-endocrine basis. Mention the aberrant symptoms and disorders of both. (IAS 2013, 20 Marks)

Zoology 8c What is anti-vitamin? Classify and describe the function of vitamins in human nutrition. (IAS 2013, 15 Marks)