N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Botany, Part-I
PAPER-III
(Plant Pathology)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. Describe role of enzymes in disease development.
2. Describe various kinds of disease symptoms caused by fungal pathogens in the host plants.
3. Describe in detail pre and post structural defense in the host plant.
4. What do you mean by biological control of plant disease Give an account of the control of
soil borne plant diseases by the application of microbes.
5. Give a brief account of systematic fungicides.
6. Give an account of organic fungicides.
7. Describe symptoms, etiology, disease cycle and control of Late blight of potato.
8. Describe symptoms, etiology and control of little leaf of brinjal.
9. Describe symptoms, etiology and control of citrus canker.
10. Write short notes on any Two of the following
Bordeaux mixture
Disease escape
Disease resistance
Soil amendment