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Iph2206:Pathology Question Paper

Iph2206:Pathology

Course:Bachelor Of Science In Public Health

Institution: Meru University Of Science And Technology question papers

Exam Year:2014

INSTRUCTIONS: Answer question one and any other two questions
QUESTION ONE (30 MARKS)
Write short notes on;
a) Quiescent infections. (6 Marks)
b) Postharvest disease initiation. (6 Marks)
c) Chilling injury (6 Marks)
d) Three main causes of postharvest losses. (9 Marks)
e) Field heat (3 Marks)
QUESTION TWO (20 MARKS)
Explain how pathogens penetrate fruits and vegetables during and after harvest. (20 Marks)
QUESTION THREE (20 MARKS)
Explain how the following factors affect disease development
a) Fruit ripening stge. (5 Marks)
b) Acidity level in fruits and vegetable tissues. (5 Marks)
c) Storeroom atmosphere (5 Marks)
d) Inoculum level. (5 Marks)
2
QUESTION FOUR (20 MARKS)
Explain the strategies for postharvest disease control and prevention under the following
headings;
a) Preharvest chemical treatment. (5 Marks)
b) Postharvest chemical treatment. (5 Marks)
c) Biological control. (5 Marks)
d) Hygiene practices. (5 Marks)
QUESTION FIVE (20 MARKS)
Briefly explain what you understand by;
a) i) Modified atmosphere packaging. (5 Marks)
ii) Controlled atmosphere storage. (5 Marks)
b) Explain any five practical advantages of storage of fruits under controlled atmosphere.
(10 Marks)

Iph2206:Pathology Question Paper

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