M.Sc. DEGREE EXAMINATION, FEBRUARY 2018.
Fourth Semester
Zoology
Paper I ECOTOXICOLOGY AND APPLIED ZOOLOGY
2 1720841
Time 3 Hours Max. Marks 70
SECTION — A
Answer any FIVE questions. 6 30 Marks)
1. Bombyx mori.
2. Toxicity.
3. LD50.
4. Pesticides.
5. Induced breeding.
6. Dose response.
7. Bombyx mori.
8. LDH.
SECTION — B
Answer ALL questions. 10 40 Marks)
9. Give an account on the physiological and biochemical hazards of pesticides in
animals.
Or
Write an essay objectives of safety evaluation study.
10. Give an account on the legislative acts in India on the production and release
of toxicants.
Or
Write an essay on the education on environmental pollution problems.

11. Describe the clinical picture, symptoms and prophylaxis of bacterial diseases
in fishes.
Or
Write an essay on byproducts of fishes.
12. Give a detailed account on the economic importance of sericulture.
Or
Describe the morphology and life cycle of Bombyx mori.