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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