M.Sc. (Previous) DEGREE EXAMINATION, MAY First Year ZOOLOGY. Paper I : Systematics and Anatomy of Invertebrates

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1 (DZOO 01) M.Sc. (Previous) DEGREE EXAMINATION, MAY 2015 First Year ZOOLOGY Paper I : Systematics and Anatomy of Invertebrates Time : 3 Hours Maximum Marks: 80 Answer all questions All questions carry equal marks 1) a) Describe advanced blood circulatory system in Annelida. i) Development in sponges. Parasitic adaptations in Platyhelminthes. 2) a) Write an account of classifications of phylum Arthropoda up to orders. i) Evolutionary significance of Trochophore larva. General organization of Protozoa. 3) a) Give an account on general organization of Rotifera. i) General organization of Echinoderms. Sipuncula.

2 4) a) Give detailed notes on classification of the phylum Porifera up to orders. i) General organization of Coelenterata. Chaetognatha. 5) a) Describe classification of phylum Mollusca up to orders. i) Sea urchin. General organization of Nematehelminthes phylum.

3 (DZOO 02) M.Sc. (Previous) DEGREE EXAMINATION, MAY 2015 First Year ZOOLOGY Paper - II : Systematics and Anatomy of Chordates and Gamete Biology Time : 3 Hours Maximum Marks: 80 Answer all questions All questions carry equal marks 1) a) Give detailed notes on Oogenesis. i) South Indian mammals. General characters of the phylum Chordata. 2) a) Describe classification of Birds up to class. i) Cephalochordata. Flightless birds. 3) a) Give detailed notes specialized characters of Hemichordata and Urochordata. i) General characters of poisonous snakes. Common birds of India.

4 4) a) Give an account of classification of Amphiba. i) Aquatic adaptations in mammals. Oesterous cycle. 5) a) Give an account of general characters of mammals. i) Classification of fishes. Patterns of Cleavage.

5 (DZOO 03) M.Sc. (Previous) DEGREE EXAMINATION, MAY 2015 First Year ZOOLOGY Paper - III : Cell Biology, Genetics and Evolution Time : 3 Hours Maximum Marks: 80 Answer all questions All questions carry equal marks 1) a) Describe the power house of cell. i) Unit membrane structure. Golgi complex. 2) a) How does protein synthesis happens in a cell? Explain. i) messenger RNA. transfer RNA. 3) a) Describe the chromosome structure. i) Mitosis. giant chromosomes.

6 4) a) Give an account on interaction of genes. i) Multiple alleles. Sex determination. 5) a) Explain the theories of evolution. i) Modern synthetic theory. Species concept.

7 (DZOO 04) M.Sc. (Previous) DEGREE EXAMINATION, MAY 2015 First Year ZOOLOGY Paper - IV : Animal Ecology and Wildlife Time : 3 Hours Maximum Marks: 80 Answer all questions All questions carry equal marks 1) a) Give notes on classification of ecosystems with suitable examples. i) Feed-back loop. Ecosystem functions. 2) a) Describe Biogeochemical cycle of nitrogen. i) Concept of Productivity. Food chain. 3) a) Write detailed notes on concept of habitat and ecological niche. i) Mutualism. Interspecific competition and Coexistence.

8 4) a) Give an account on density dependent action in population control. i) Basic concept rates. r and k selection. 5) a) Give an account on National wild life action plan. i) Hot spots. Biosphere reserves and wildlife projects in India.