IFS Zoology Papers 2004

IFS Zoology 2004

Paper-I

Section A

  1. Write briefly on any four of the following in not more than 150 words each (10 × 4 40)

    1. Types of spicules in sponges

    2. Torsion in Gastropoda

    3. Coral reefs and their formation

    4. Types of Reptilian skulls

    5. Mechanism and physiology of gill respiration in fishes.

  2. Answer the following questions

    1. Give the salient features of Phylum Mollusca and classify it up to classes cliting distinguishing characters and examples (20).

    2. Describe the affinities of Onychophora (20).

  3. Answer the following questions

    1. Descriptive the life history of Ascaris (20).

    2. Give an account of the development of Obelia medusa (20).

  4. Pituitary gland is no longer considered as the leader of endocrine orchestra. Discuss (40).

Section B

  1. Write notes on any four of the following is not more than 150 words each (10 × 4 = 40)

    1. Ecological succession

    2. Seasonal and circadian rhythms

    3. Carp culture

    4. Application of Chi-square test in genetics.

    5. Geiger-Muller counter

  2. Discuss in detail the various factors the regulate the population growth (40).

  3. Answer the following questions

    1. Give an account of status of Sericulture in India (20).

    2. Give an account of tropotaxis as a directed orientation reaction in animals (20).

  4. Answer the following questions

    1. Describe the properties of normal distribution (20).

    2. Describe the principles and applications of S. E. M (20).

Paper-II

Section A

  1. Distinguish between any four of the following (each answer may be in about 150 words): (10 × 4 = 40)

    1. Exocytosis and endocytosis.

    2. xy and xo chromosomal basis of sex determination.

    3. Neanderthal man and Ramapithecus.

    4. Geographical and ethological isolation.

    5. Haeckel's and Whittaker's principles of Classification.

  2. Explain the process, theories, experimental proof and enzymes involved in DNA replication (40).

  3. Describe how the gene is regulated and expressed in prokaryotes (40).

  4. Write short notes on the following (10 × 4 = 40)

    1. Role of mimicry in evolution (10).

    2. What are fossils are how does fossilization take place (10)?

    3. Illustrate with examples the causes of change ion gene frequency (10).

    4. How continent: I driff has affected distribution of animals?

Section B

  1. Distinguish between any four of the following (each answer may be in about 150 words): (10 × 4 = 40)

    1. Enzymes and Coenzymes.

    2. Kreb's TCA Cycle and Glycolysis.

    3. Induction and involution.

    4. Yolk-sac placenta and Chorioallantoic placenta.

    5. Osmoregulation and thermo regulation.

  2. What are steroid hormones? Describe their biosynthetic pathway and functions (40).

  3. Describe the physiology of contraction of skeletal muscle (40).

  4. What is fate map? How is it constructed? Describe the fate map of Chick (40).