Thursday, September 17, 2015

2015 Question Paper of NOU for B.Sc. Botany Honours Paper III

NOU Old Sample Previous Years Model Original Question Papers - Get here a Question Paper of B.Sc Boany Honours Paper III of Part II.

Nalanda Open University Question Paper
Annual Examination - 2015
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 A, B and C.
All questions carry equal marks.
Group - A (Microbiology)
1. Give an account of the structure of Tobacco Mosaic Virus.
2. For which purpose bacteria are used in the industries?
3. Give an account of the degradation of agricultural produce by microbes.
Group - B (Plant Pathology)
4. Describe the process involved in infection.
5. Define toxin and describe its role in pathogenesis.
6. What are phytoalexins? Describe their role in defence against pathogens.
7. Give an account of biochemical defence of the host.
Group - C (Embryology)
8. Describe the development of pollen grains.
9. Give an account of the development of Polygonum type of empryo sac.
10. Write notes on any Two of the following :
(a) Anther culture
(b) Double fertilization
(c) Induced parthenocarpy
(d) Endosperm

Duraimani

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