National Open University of Nigeria
14-16 Ahmadu Bello Way, Victoria Island Lagos
School
of science and Technology
October/November 2013 Examination
Corse Code: ESM 424
Course Title: FRESH WATER ECOLOGY
1. many micro-organisms play foundational roles in aquatic ecosystems.
Mention and discuss five any that micro-organisms constitute part of the fresh
water organisms 171/2
marks
2. Some of the abiotic factors affecting the functioning of
the fresh water ecosystem are temperature related. Discuss 171/2
marks
3. for each action that man takes in his lifestyle, there is
a resultant effect on the ecosystem, discuss
Some of these effects on fresh water communities
4a. some animals have developed adaptations that allow them
to travel through lotic water without being inhibited in same spot. Discuss 131/2 marks
b. list four sources through which lotic water communities
can be formed 4marks
5. Identify and explain the possible strategies for the
management of fresh water ecosystem
171/2 marks
6a. identify and explain the three main areas of fresh water
environment 11marks
b. list the major factors affecting the oxygen concentration
in lentic water
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you can also attend Online Classes,Online Colleges,online tutorials. to be well prepared for exam Goodluck.
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you can also attend Online Classes,Online Colleges,online tutorials. to be well prepared for exam Goodluck.
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