Dr. A.P.J. Abdul Kalam University MSC (Botany) II SEM Plant Pathology [MSB403T] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Master of Science (Botany)

Fourth Semester Main Examination, June-2021

Plant Pathology [MSB403T]

Time: 3:00 Hrs Max Marks 85

Note: Attempt all questions.

Part A is 10 Marks and Part B is 07 Marks.

Q.1 (a) Write the methods of studying plant diseases?

(b) Comment on physiology of disease plants?

OR

(a) Explain the disease of Rice

(b) Write the History and progress of plant pathology.

Q.2 (a) Write a note on defense mechanisms in plants?

(b) Hormonal inbalance symptoms, treatment and couses.

OR

(a) Write the development of Pathogen role of enzyme.

(b) How do plant pathogens Spread.

Q.3 (a) Describe the prevention of disease in plants?

(b) Write factors effecting disease resistance in plants..

 OR

(a) Describe term and concepts in plant pathology.

(b) Methods of disease transmission in plants.

Q.4 (a) Explain the importance of biological control in plants?

(b) Describe chemical methods for plant disease control.

OR

(a) Describe the prevention of disease in plant’s.

(b) Methods of disease transmission in plant’s.

Q.5 (a) Describe the disease that occur in different crops? (any two)

(i) Jawar (ii) Barley

(b) Write about the sugar cane disease.

OR

(a) Describe the method of control of disease in different crops (any two)

(i) Mango (ii) Pulses (iii) Ground nuts

(b) Discuss the disease in Cotton and its methods of Control?

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