Zoology CSS Paper II 2005

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS
IN BPS – 17 UNDER THE FEDERAL GOVERNMENT, 2005.

ZOOLOGY, PAPER – II

TIME ALLOWED: THREE HOURS MAXIMUM MARKS:100

NOTE: Attempt FIVE questions in all, including question No. 8 which is COMPULSORY. All questions carry EQUAL marks. Give diagram wherever required.

  1. (a) List the steps involved in the synthesis of protein starting from DNA.
    (b) Give an account of morphology.chemical composition and functioning of golgi complex.

  2. (a) Briefly discuss the mechanism involved in transport of oxygen from lungs to tissues.
    (b) What are the different excretory products in animals?How and why these are produced in different animal groups.

  3. (a) Discuss the multiple allele inheritance with reference to inheritance of ABO blood groups in man.
    (b) Define epistasis?How does it differs from dominance?Give three examples of epistatic interactions.

  4. (a) Give a brief account of the possible origin of life on this globe.
    (b) Compare the darwin’s theory of natural selection with the Lamarck’s theory of acquired characters.

  5. (a) Define ecosystem.discuss pond as an example of complete ecosystem.
    (b) What is biogeochemical cycle? Describe phosphorus cycle.

  6. (a) Discuss the role of polyploidy in developmentment of commercial varieties in plants.
    (b) Discuss different enzymes involved in digestion in man.

  7. Write short notes on:
    (a) sex linkage (b) lysosomes (c) pituitary hormones (d) air pollution

Compulsory Question

  1. Write only the correct answer in the answer book.Do not reproduce the question

  2. The chemical composition of a chromosome is :
    (a) lipoprotein (b) polysaccharide (c) nucleoprotein (d) None of these

  3. Lysosomes are responsible for:
    (a) Protein (b) ATP formation (c) intracellular breakdown (d) None of these

  4. Ribosomes are located on:
    (a) cell membrane (b) rough endoplasmic reticulum (c) mitochondria (d) nuclear membrane
    e) None of these

  5. The metaphase chromosomes are thick because these
    (a) multiply (b) duplicate (c) coiled coiling (d) none of these

  6. Glycolysis occur in
    (a) cytoplasm (b) mitochondria (c) cell membrane (d) all of these

  7. Nerves convey the message in the form of
    (a) physical impulse (b) chemical impulse (c) electrical impulse (d) none of these

  8. Follicle stimulating hormone is produced in:
    (a) ovary (b) pituitary (c) hypothalamus (d) all of these

  9. The primary excretory product is
    (a) Ammonia (b) Carbon dioxide (c) feaces (d) none of these

  10. pepsin is responsible for digestion of:
    (a) carbohydrate (b) lipid (c) protein (d) all of these

  11. XXY individual in men is phenotypically
    (a) male (b) female (c) intersex (d) none of these

  12. Sex linked genes are located on :
    (a) only on X chromosome (b) only on Y chromosome (c) sex chromosome (d) All of these

  13. Mendelian segregation is applicable to :
    (a) gametogenesis (b) meiosis (c) spore formation (d) none of these

  14. the number of the alleles of a gene in a diploid individual is:
    (a) any number (b) one (c) two (d) three

  15. The gene mapping is measured in:
    (a) Millimeters (b) microns (c) Angstrom (d) centi morga

  16. genetic dominance concerns with the phenotypic expression in:
    (a) heterozygous (b) homozygous (c) both a and b (d) none of these

  17. The first living organism was
    (a) Algal cell (b) virus (c) bacteria (d) none of these

  18. Enzymes are chemically
    (a) carbohydrates (b) lipids (c) lipoproteins (d) proteins

  19. Theory of natural selection was initially proposed by:
    (a) darwin (b) Wallace (c) both Darwin and Wallace (d) Eyll

  20. Second law of thermodynamics demand
    (a) energy stability (b) energy loss during transfer of energy (c) Energy flow from one form to Another (d) none of these

  21. The basic purpose of ecosystem is
    (a) maintenance of organisms (b) energy flow (c) chemical movements (d) none of these

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