PLANT PATHOLOGY (BOTS4209)
BSc, Applied Botany - BOTS
Semester: Second Semester
Level: 400
Year: 2019
REPUBLIC OF CAMEROON THE UNIVERSITY OF BAMENDA
Peace-Work-Fatherland
P. O. BOX 39 Bambili
School/Faculty: _SCIENCE____________ Department:_Biological Sciences
Lecturer(s): _Pr Mbong/ Dr Tonjock
Course Code: _BOTS4209_______ Course Title: Plant Pathology
Date: _05/07/2019_______Halls: __Asanji 1 ________Time: 8:00-10:00
Instructions: Answer all questions section by section beginning with
any part of your choice.
SECTION A (35 Marks)
1. (a) What are the different ways by which pathogens cause diseases in plants? (2mks)
(b) Explain the following (i) Acquisition period (ii) Incubation period (iii) Necrosis (iv)
Nanism (v) Rosette (vi) Inoculum (5mks)
2. List any five symptoms each, associated with: a) Destruction and weakening of plant
tissues and Hyperplasia (2.5mks)
3. With the aid of diagrams explains (a) A septate and non- septate hyphae and (b)
basidiospore (6mks)
4. Explain the different types of flagellation in bacteria (3mks)
5. What are the characteristics of the genus Erwinia (3.5mks?)
6 How do viruses differ from the other plant pathogens? (2.5mks)
7. Non parasitic diseases have also been known to cause plant failure. What are the conditions
that lead to these failure (1.5mks)
8. What are the conditions that favours a pathogen once it reaches the surface of the host plant
9.) Distinguish between penetration and infection. (2mks)
(b) How do Nematodes penetrates plants (3mks)
(c) Plant diseases can be disseminated through direct and indirect transmission. List the
processes involved with direct transmission (1.5mks)
SECTION B (35mks)
1. Lists and explain 3 major groups of plant pathogenic fungi? (5mks).
2. Describe how you can isolate and identify a plant pathogenic fungus from a bean leaf?
(5mks).
3. List and explain the different plant defence mechanism against pathogens? (lOmks).
4. What are the principles of plant disease management? (5mks).
5. List 10 ways in which plant disease can be managed? (5mks)
6. Describe the different symptoms, host plant and causative agent of plant pathogenic fungi
encountered during the fieldtrip? (5mk)
GOODLUCK
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