B.A., B.Sc. (General) 1st Semester Examination
Zoology Biodiversity & Cell Biology-II
Paper: II
Time: 3 Hours] [Max. Marks: 36
Note: - (i) Attempt five questions in all.
(ii) Question No. 1 is compulsory.
(iii) Select one question from each Unit.
(iv) Illustrate your answer with suitable diagrams.
1. Give/Define brief explanations of the following:
(a) Scolex
(b) Mehli's gland
(c) Protandry
(d) Heterochromatin
(e) Pineal spicule
(f) Hexacanth
(g) Gravid Proglottid
(h) Benign Tumour
Unit-I
2. Give a detailed account of the Life History of Fasciola.
3. (a) Describe the morphological adaptations of Helminthes.
(b) Explain the sense organs of Ascaris.
Unit-II
4. Explain the different types of Nephridia of Pheretima.
5. (a) Draw well labelled diagram of T. S. Pheretima through Typhlosolar region.
(b) Classify upto order with ecological note and economic importance (if any) of any two of the following:
(i) Eunice
(ii) Tubifex
(iii) Pontobdella
Unit-III
6. (a) Explain Polymorphism in Lysosome.
(b) What is the role of Autolysis?
7. (a) Differentiate between Prokaryotic and Eukaryotic Ribosomes.
(b) Write a note on centriolar satellite complex.
Unit-IV
8. (a) Describe the structure and functions of Nucleolus.
(b) Explain the types of Cancer.
9. (a) Differentiate between B cells and T cells.
(b) How do the B cells respond to Antigens ?
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