Download PTU B.Voc 2020 Dec 1st Sem 75654 Principles Of Plant Pathology Question Paper

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Roll No. Total No. of Pages : 02
Total No. of Questions : 18

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B.Voc. Agriculture (2018 & Onwards) (Sem.-1)
PRINCIPLES OF PLANT PATHOLOGY
Subject Code : BVAG-106-18
M.Code : 75654
Time : 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

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Write briefly :

1. What do you mean by IDM?
2. What is Disease Triangle?
3. What is the composition of Bordeaux mixture? Who discovered it?
4. What do you mean by Primary & Secondary Inoculums? Give example of each.

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5. What do you mean by Biological control? Give two examples.

Differentiate between the following :

1. Disease and Epidemic
2. Virus and Viroid
3. Algae and Fungi

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4. Resistance and Tolerance
5. Root rot and wilt

SECTION-B

1. Write the important characteristic of fungi.
2. What is Plant Disease Epidemiology? Give any two examples of epidemics diseases alongwith their causal organisms.

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3. Give the important contributions of (i) EJ Butler (ii) KC Mehta
4. Write short note on solar heat treatment.
5. Explain active and passive dispersal alongwith examples.

SECTION-C

1. a) What do you mean by Survival? Give sources of survival of
   1. loose smut of wheat

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   2. Sheath blight of rice
   3. Apple scab.
   b) Write short note on management root knot nematode in crops.
2. Differentiate between infection & infestation. Give brief note on Physiological Specialization in rust fungi.
3. Write short note on Plant quarantine and inspection? Explain its role in managing plant diseases.

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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.