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Limnology  Question Paper

Limnology  

Course:Bachelor Of Education

Institution: Kenyatta University question papers

Exam Year:2009



KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2009/2010
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE AND BACHELOR OF EDUCATION

SZL 312: LIMNOLOGY

DATE: Thursday
24th December 2009
TIME: 11.00am – 1.00pm

INSTRUCTIONS
Section A: answer all questions

1.
Outline the classification of planktonic organisms according to size.
2.
Explain the key morphometric measures that can be used in describing lentic ecosystems.
3.
Discuss briefly the importance of the following parameters to aquatic organisms:
a)
Dissolved oxygen
b)
Conductivity
c)
pH
4.
Explain how the pollution status of an aquatic system can be classified using biological oxygen demand (BOD).
5.
Outline the problems associated with aquatic weeds.
6.
Explain the importance of riparian vegetation in the structuring and functioning streams.
7.
Outline the distinguishing characteristics of Ephemeroptera and Plecoptera.
8.
Outline the main processes through which lakes are formed.

Section B: Answer any ONE question (30 marks)
9.
Discuss the postulates and River Continuum Concept and criticisms raised against it.
10.
Discuss how latitude influences thermostratification and productivity of lakes.




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