Download PTU B.Sc Agriculture 2019 May 3rd Semester 72556 PRINCIPLE OF PLANT PATHOLOGY Question Paper

Roll No.

Total No. of Questions : 09

Total No. of Pages : 02

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B.Sc.(Agriculture) (2014 & Onwards) (Sem.-3)

PRINCIPLE OF PLANT PATHOLOGY

Subject Code : BSAG-306

M.Code: 72556

Time: 3 Hrs.

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Max. Marks : 60

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.

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SECTION-A

1. Write briefly :
   1. Apothecia
   2. Saprophyte
   3. Gram positive bacteria
   4. Appressoria

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   5. Bacteria
   6. Fungi
   7. Parasite
   8. Disease Triangle
   9. Phytoplasma

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   10. Pycnidium
2. Write major characters of genus Phytophthora.

SECTION-B

3. Explain and draw a well labelled diagram of life cycle of rust causing fungi/Puccinia.

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4. What is disease cycle and enlist different steps of disease cycle.
5. Contributions of Anton de Bary in plant pathology.
6. Write differences between Rhizopus and Mucor and explain it with diagram.
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SECTION-C

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7. Discuss different mode of the dispersal of plant pathogens.
8. Discuss characters of the genus Erysiphae, Phyllactinia, Uncinula, Podosphaera and Oidium; draw diagram of ascocarp of respective genera.
9. Explain different cultural and physical management practices for 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.

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