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Hydrobiology  Question Paper

Hydrobiology  

Course:Bachelor Of Education

Institution: Kenyatta University question papers

Exam Year:2009



KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
INSTITUTE OF OPEN LEARNING

EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE AND
BACHELOR OF EDUCATION

SZL 204:
HYDROBIOLOGY

DATE: FRIDAY 14TH AUGUST 2009
TIME: 2.00 P.M. – 4.00 P.M.

INSTRUCTIONS:`
SECTION A:
Answer ALL Questions. (40 marks)

1.
Explain the following terms:
a)
Constancy of relative proportions
b)
Tychoplanktons
c)
Benthic
d)
Fusiform
e)
Salinity
2.
Illustrate using diagram thermal stratification in temperate lakes.
3.
Explain the effects of light on the distribution of aquatic organisms.
4.
Describe the characteristics of oligotrophic lakes.
5.
Outline the problems associated with aquatic weeds in tropical waters.
6.
Compare and contrast aquatic and terrestrial environments.
7.
“Raw sewage is being released directly into Lake Nakuru without treatment”. Describe the processes that follow after the release.
8.
Describe the determination of water transparency.

SECTION B: Answer any other questions (30 marks)
9.
“Water is both a friend of man as well as a foe”. Explain this statement.
10.
Discuss methods commonly used to determine primary productivity in aquatic ecosystems.
11.
Write an essay on the impacts of man on aquatic systems.




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