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Bota 251: Introduction To Plant Pathology Question Paper

Bota 251: Introduction To Plant Pathology

Course:Bachelor Of Science In Agricultural Education

Institution: Chuka University question papers

Exam Year:2013

CHUKA

UNIVERSITY

UNIVERSITY EXAMINATIONS
SECOND YEAR EXAMINATION FOR THE AWARD OF DEGREE OF
BACHELOR OF SCIENCE (AGRICULTURE EDUCATION)

BOTA 251: INTRODUCTION TO PLANT PATHOLOGY

STREAMS: BSC (AGED) Y2S2 TIME: 2 HOURS

DAY/DATE: THURSDAY 8/8/2013 8.30 AM-10.30 AM
INSTRUCTIONS:

Answer All Questions in Section A and Two Questions in Section B

Section A: Short Answer Questions (30 Marks)

1. (a) State the contribution of the following persons to the development of plant pathology. [2 marks]

(i) Robert Koch
(ii) Antonia Micheli

(b) Fill the table below: [3 marks]

Pathogen Disease

(i) _________________________
(i) Coffee rust

(ii) Phytophthora infestans (ii) _______________________

(iii) ________________________ (iii) Dumping oft

(iv) Erwinia carotovora (iv) _______________________

(v) Puccinia graminis (v) ________________________

(vi) ________________________ (vi) Wheat rust

2. (a) Name the pathogen that causes halo blight of beans. [1 mark]

(b) Describe typical symptoms of the disease [2 marks]

(c) Outline four methods of managing the disease. [2 marks]

3. Describe the life cycle of root knot nematode (meloidogyne spp) [5 marks]

4. Describe the penetration of a pathogen into a susceptible host. [5 marks]

5. Highlight five disease induction mechanism in plants. [5 marks]

6. Outline five factors that guide the germination of a fungal spore on the host surface. [5 marks]
Section B: Essay (40 Marks)

7. Discuss the management of plant parasitic nematodes

8. Write an essay on crown gall disease

9. Discus disease predisposition in plants.

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Bota 251: Introduction To Plant Pathology Question Paper

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