IFS Zoology Papers 2002

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IFS Zoology 2002

Paper-I

Section A

  1. Write briefly on any four of the following in not more than 150 words each:
    1. Metamerism and its significance (10)
    2. Structure of respiratory organs in arthropods (10)
    3. Bipinnaria larva (10)
    4. Origin of tetrapod limb (10)
    5. Parasitic adaptations in Platyhel minthes (10) .
  2. Answer the following questions
    1. Give an account of general organization of Onychophora and discuss its status in animal kingdom (20) .
    2. Elucidate the affinities and systematic position of Parazoa based on its structural peculiarities (20) .
  3. Answer the following questions
    1. Explain metamorphosis in insects and add a note on its hormonal regulation (20) .
    2. Describe locomotory organs and mechanism of locomotion in Mollusca (20) .
  4. Give an illustrative account of the derivatives of integument in amphibia, reptiles and mammals (40) .

Section B

  1. Write notes on any four of the following in not more than 150 words each:
    1. Environment degradation (10)
    2. Social behaviour in primates (10)
    3. Pyrilla perpusilla (10)
    4. Plague: Its etiology, epidemiology and pathogenesis (10)
    5. Principles of spectroscopy (10)
  2. Answer the following questions
    1. Describe major terrestrial biomes of India and comment on their present status (20) .
    2. What is conservation? Discuss in detail the wild life management practices undertaken in
    • India (20) .
  3. Answer the following questions
    1. Present an account of various modes of associative learning in animals (20) .
    2. Mosquito and malaria have biological links. Substantiate the statement with reasons (20) .
  4. Explain correlation analysis. Describe different types and methods of studying correlation with suitable examples (40) .

Paper-II

Section A

  1. Distinguish between any four of the following (Each answer may be in about 150 words) :
    1. Mitosis and Meiosis
    2. Plasmids and Cosmids as vectors
    3. Role of mutations and variations in evolution.
    4. Species and Subspecies
    5. Transcription and Translation (10 × 4 = 40) .
  2. Lysosome is the ‘suicide bag’ of the cell. Discuss (40) .
  3. Give an account of DNA finger printing technique and its importance (40) .
  4. Write notes on the following:
    1. Origin of Life
    2. Importance of fossils
    3. International Code of Nomenclature
    4. Mimicry (10 × 440) .

Section B

  1. Distinguish between any four of the following (Each answer may be in about 150 words) :
    1. Hormones and Enzymes
    2. Nephron and Neuron
    3. Blastula and Gastrula
    4. Growth and Regenerations
    5. Red blood corpuscles and White blood Corpuscles (10 × 4 = 40) .
  2. Give an account of bioenergetics of glycolysis and Krebs cycle (40) .
  3. Explain the mechanism of hormone action and the importance of second messengers (40) .
  4. Write notes on the following:
    1. In-vitro fertilization
    2. Causation of metamorphosis in frog
    3. Placentation in humans
    4. Baer՚s Law
    5. Cloning (8 × 5 = 40)