Zoology IAS Paper 1 UPSC 2013 with Solutions

Zoology Paper 1 UPSC 2013 - Question Paper with Solutions 

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SECTION-A

1. Answer the following in about 150 words each:

Zoology 1a Comment on the evolutionary change in the proportion of limbic system versus cerebral hemisphere in vertebrates.  (IAS 2013, 10 Marks)

Zoology 1b What is circadian and circannual rhythm? Briefly discuss the influence of exogenous cycles on these rhythms.  (IAS 2013, 10 Marks)

Zoology 1c Describe locomotion in Hirudinaria.  (IAS 2013, 10 Marks)

Zoology 1d Draw a labelled diagram of alimentary canal and salivary apparatus in Periplaneta americana. (IAS 2013, 10 Marks)

Zoology 1e Describe hyoid apparatus in Frog or Necturus.  (IAS 2013, 10 Marks)

Zoology 2a Describe the functional anatomy of neuro-endocrine inter-relationship in mammalian hypophysis. Name hypothalamic and hypophyseal hormones in the tabular form showing their functional relationship. With the help of the diagram only explain feedback mechanism in the HPG axis. (IAS 2013, 25 Marks)

Zoology 2b Write an account of parental care in Amphibia. (IAS 2013, 25 Marks)

Zoology 3a Through a comparative chart, give an account of accessory sex glands in the male vertebrate animal types such as dogfish, frog, lizard, pigeon and rabbit. (IAS 2013, 25 Marks)

Zoology 3b Give an elaborate account of canal system in Porifera and discuss the taxonomic importance of spicules. (IAS 2013, 25 Marks)

Zoology 4a Give an account of coral reefs, their constituent compartments and significance. (IAS 2013, 25 Marks)

Zoology 4b Describe the life cycle of Taenia solium through a labelled diagram only and discuss its parasitic adaptations. (IAS 2013, 25 Marks)

SECTION-B

5.Answer the following in about 150 words each:

Zoology 5a While using a compound microscope, how will you know how much you are magnifying an object? Through a distance under low and high powers.  (IAS 2013, 10 Marks)

Zoology 5b Define ‘insight’. Explain this behaviour using the example of Chimpanzees.  (IAS 2013, 10 Marks)

Zoology 5c What is forensic biotechnology? Discuss its significance.  (IAS 2013, 10 Marks)

Zoology 5d Describe the method of studying animal behaviors using T-maze.  (IAS 2013, 10 Marks)

Zoology 5e Through a labelled diagram, show the stages of life- history of Bombyx mori.  (IAS 2013, 10 Marks)

Zoology 6a Describe the carbon cycle and discuss its peculiarities. How do human activities interfere with the carbon Cycle?  (IAS 2013, 25 Marks)

Zoology 6b Define ecosystem. Discuss the dynamic of the ecosystem and the factors influencing it.  (IAS 2013, 25 Marks)

Zoology 7a State briefly what are biomes, ecotones and ecological ' succession. Give an account of the causes,  trends and general process of ecological succession in nature.  (IAS 2013, 25 Marks)

Zoology 7b What is filariasis? Discuss the structure and life-history of filarial worm. Highlight-its pathogenic aspects and preventive measures.  (IAS 2013, 25 Marks)

Zoology 8a What is the principle of spectrophotometry? Discuss the details of instrumentation and application of spectrophotometer. Comment upon the common feature of spectrophotometric assay and ELISA, if any.  (IAS 2013, 25 Marks)

Zoology 8b Name four human genetic diseases. Give an account of human genome research and its applications.  (IAS 2013, 25 Marks)