M.Sc. (ZOOLOGY) (Previous) DEGREE EXAMINATION :: MAY 2006 Paper - I : SYSTEMATICS AND ANATOMY OF INVERTEBRATES

Transcription

1 M.Sc. (ZOOLOGY) (Previous) DEGREE EXAMINATION :: MAY 2006 Paper - I : SYSTEMATICS AND ANATOMY OF INVERTEBRATES 1 1. (a) Write an essay on reproduction in protozoa. (i) Parasitic protozoa (ii) General organization of Porifera. 2. (a) Discuss on the parasitic adaptations in Platyhelminthes. (i) Polymorphism in coelenterate (ii) General organization of Nematyhelminthes. 3. (a) General organization of Arthropods. (i) Reproduction in Annelida (ii) General features of Insects. 4. (a) Describe the general organization of Echinodermata. (i) Bipinnaria larva (ii) Classify Mollusca upto orders. 5. (a) Write an essay on the general characters of Rotifera. (i) Sipunculoidea (ii) Chaetognatha. (DZOO 01)

2 M.Sc. (ZOOLOGY) (Previous) DEGREE EXAMINATION :: MAY (DZOO 02) Paper - II : SYSTEMATICS, ANATOMY OF CHORDATES AND GAMETE BIOLOGY 1. (a) Write an account on the general features of prochordates. (i) Special characters of chordata (ii) Hemichordates 2. (a) Give the general classification of Amphibia with example (upto order). (i) Anadromous fish migration (ii) Characters of reptiles. 3. (a) Write an account on Respiration in birds. (i) Write briefly on any 4 common Indian birds (ii) General characters of birds. 4. (a) Give an account of South Indian Mammals. (i) Marsupials (ii) Aquatic adaptation in Mammals. 5. (a) Discuss the mechanisms of Fertilization. (i) Spermatogenesis (ii) Different types of animal eggs.

3 M.Sc. (ZOOLOGY) (Previous) DEGREE EXAMINATION :: MAY 2006 Paper - III : CELL BIOLOGY, GENETICS AND EVOLUTION 3 1. (a) Explain the transport mechanism across cell membrane. (i) Mitochondrial Enzymes (ii) Endoplasmic Reticulum. 2. (a) Discuss the role of RNA in protein synthesis. (i) Structure of DNA (ii) DNA is genetic material 3. (a) Describe the chromosomal abnormalities with examples. (i) Meiosis (ii) Mutations 4. (a) Write an essay on Mendel s laws with examples. (i) Sex determination (ii) Sex linked inheritance. 5. (a) Give an account on the concept of speciation. (i) Geographical isolation (ii) Modern synthetic theory of evolution. (DZOO 03)

4 M.Sc. (ZOOLOGY) (Previous) DEGREE EXAMINATION :: MAY (DZOO 04) Paper - IV : ANIMAL ECOLOGY AND WILD LIFE 1. (a) With suitable examples give an account on the classification of ecosystems. (i) Factors affecting light availability in waters. (ii) Feed back loop. 2. (a) Explain the importance of Carbon cycle as a Bio-geo chemical cycle. (b) Write short notes on: (i) Shelford s law of tolerance (ii) Food web. 3. (a) Write in detail about the salient features of positive interactions in animals. (i) Predation (ii) Ecological niche. 4. (a) Discuss in detail about the density dependent and density independent actions in population control. (b) Write short notes on: (i) r- and k- selection (ii) Energy optimization. 5. (a) Write an account on the rare and threatened species and discuss the causes of their depletion. (i) World Wide Life Fund (ii) Hot spots.

5 M.Sc. (ZOOLOGY) (Final) DEGREE EXAMINATION :: MAY Paper - V : ANIMAL PHYSIOLOGY Each question carries equal marks (DZOO 21) 1. (a) What are fat soluble vitamins? Discuss their role in biochemical reactions. (i) Digestion of Carbohydrates. (ii) Digestion of Proteins 2. (a) Explain in detail the transport of Oxygen and Carbon dioxide in animals. (i) Cardiac cycle (ii) Respiratory pigments 3. (a) Describe the mechanism of nerve impulse transmission in animals. (i) Chemo receptors of vertebrates (ii) Hibernation. 4. (a) Write a detailed essay on ultra filtration in Kidney. Add a note on counter current multiplier system. (i) Urine formation (ii) Osmo regulation in estuarine animals. 5. (a) Give an account of mechanism of hormone action. (i) Theories of muscle contraction (ii) Types of Muscles.

6 M.Sc. (ZOOLOGY) (Final) DEGREE EXAMINATION :: MAY Paper - VI : AQUACULTURE Draw diagrams wherever necessary (DZOO 22) 1. (a) What do you understand about induced Breeding and how is it done? Describe. (i) Culture systems and classification of Aquaculture. (ii) Criteria for selection of a species for culture. 2. (a) Give a detailed account of breeding and culture of common carp. (i) Freshwater giant prawn culture. (ii) Management of Nursery ponds. 3. (a) Explain the culture methods of Tiger shrimp. (i) Milk fish culture (ii) Air - breathing fish culture 4. (a) Describe the culture of Edible Oyster. (i) Sea weed culture (ii) Sewage - fed fish culture 5. (a) How to improve the fish stocks and what is its present status in India. (i) Protozoan diseases of fish (ii) namental fish culture.

7 M.Sc. (ZOOLOGY) (Final) DEGREE EXAMINATION :: MAY 2006 Paper - VII : PARASITOLOGY AND IMMUNOLOGY 7 (DZOO 23) 1. (a) Define the term symbiosis. Give a detailed account of the host-parasite interactions with suitable examples. (i) Balantidium Coli (ii) Metacystic development 2. (b) Describe briefly the life-cycle of a trematode parasite found in man. Indicate its pathogenicity and distribution. (i) Hydatid cyst (ii) Tegument in cestodes. 3. (a) Describe in detail the structure, life-cycle and pathogenesis of Trichuris trichura. (i) Lymphangitis (ii) Bursa in nematodes. 4. (a) What is immune reaction? Discuss the importance of immunological phenomena in the host parasite systems. (i) Epitopes (ii) Toxoid 5. (a) What is an antibody? Describe in detail the structure and properties of Immunoglobulin-G. (i) T-cells (ii) Coombs test.

8 M.Sc. (ZOOLOGY) (Final) DEGREE EXAMINATION :: MAY Paper - VIII : BIOTECHNOLOGY Maximum : 100 Marks (DZOO 24) 1. (a) What is Biotechnology? Discuss the relevance and scope of biotechnology for human welfare. (b) Write an account on the significance of biotechnology with reference to the treatment of genetic diseases. 2. (a) What is Genetic engineering? Discuss the technology involved and its application. (b) Describe r-dna technology and its role in the context of present day science. 3. (a) Give an account of different culture media employed for plant tissue culture. Add a note on the precautions to be taken for establishing a culture Lab. (b) Describe in detail initiation of callus culture. 4. (a) Describe how animal cell line cultures can be useful in studying cancer. (b) Give a critical account of the preparation of media and culture of animal cells. 5. (a) What are antibiotics? Give a comparative account of production of antibiotics and vaccines. (b) Give an account of production of commercially important enzymes in industry.