M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Botany
MICROBIOLOGY, PLANT PATHOLOGY AND
IMMUNOLOGY
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Prions.
2. Mycoplasma.
3. Mesosome.
4. Endospores.
5. Epidemic.
6. Haustorium.
7. Necrosis.
8. Damping off disease.
9. R-genes.
10. Antibody.
Sub. Code
4MBO1C3
AFF-4894
2
Sp3
Part B x 5 25)
Answer all questions, choosing either or
11. Explain the ultra structure of virus with a neat
sketch.
Or
Write a brief note on phytoplasma.
12. Explain the salient features of Cyanobacteria.
Or
With neat sketch explain the ultra structure of
Bacteria.
13. Define and Explain Koch's postulates.
Or
Write brief note on Mycotoxins.
14. Explain casual organism and control measure of
wilt disease in cotton.
Or
Write the symptom of rice blight disease.
15. Explain the mechanism of innate immune system in
plants.
Or
Write a note on antigen antibody interaction.
AFF-4894
3
Sp3
Part C x 10 30)
Answer any three questions.
16. Discuss in detail the differences between Prokaryotes and
Eukaryotes.
17. Describe the different types of reproduction in Bacteria.
18. Discuss Host-Parasite interactions.
19. Explain the casual organism, symptoms and disease
management of Tikka diseases of Groundnut.
20. Explain any one technique used in detection of antibody.
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