Nalanda Open University
Annual Examination 2016
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 (Microbiology)
1. Describe the structure and life cycle of bacteriophage.
2. Give the detailed account of the structure of a bacterial cell.
3. For what purpose the Fungi are used in industry?
Group B (Plant Pathology)
4. Describe role of pathogen secreted enzymes in pathogenesis.
5. What are prohibitins? Describe their role in defence against pathogen.
6. Give the symptom etiology and control of loose smut of wheat.
7. Write in brief about four of the following.
Mycotoxin Contribution of Robert Koch
Symptom of wart disease of potato Telentospore of Melampsora
Transmission of TMV(f) Incubation period
Group C (Embryology)
8. Give an account of megaspore formation in Angiosperm.
9. Describe the induced parthenocarpy.
10. Define endosperm and also describe its origin, type and functions.