B.Sc. Botany (Honours), Part-II
Paper-III
Time: 3.00 Hrs. Full Marks: 80
Answer Five questions, selecting atleast one question from each group B and C.
All questions carry equal marks.
Group A
1. Describe ultrastructure and mode of reproduction in Bacteriophage.
2. Write short notes on any two of the following:-
Cell wall of Bacteria Conjugation in Bacteria
Replication of TMV Cytoplasmic inclusions of bacterial cell
3. Describe role of Bacteria in Industries.
4. Give an account of degradation of Agriculture produce by microbes.
Group B
5. Describe the role of fungal toxins in disease development.
6. Write pathological notes on any two of the following:-
Cell wall degrading enzymes Transmission of TMV
White rust of crucifers Wart disease of Potato.
7. Write briefly about the following:-
Contribution of Dr. K. C. Mehta Koch's postulate
8. Graphic representation of the life cycle of fungus causing Rust disease and smut disease.
Group C
9. Give an account of development of megaspore in Angiosperms.
Double fertilization Anther culture
Apomixis Parthenocarpy
10. Give an account of development of any one type of embryo sac studied by you.