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Zool 220 Question Paper

Zool 220 

Course:Bachelor Of Environmental Science

Institution: Kabarak University question papers

Exam Year:2009



KABARAK UNIVERSITY EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR ENVIRONMENTAL
SCIENCE
COURSE CODE: ZOOL 220
COURSE TITLE: ANIMAL ECOLOGY
STREAM: SESSION III
DAY: MONDAY
TIME: 2.00 – 4.00 P.M.
DATE: 06/04/2009
INSTRUCTIONS:
Answer All questions in Section A and Any TWO from Section B
SECTION A. (40 MARKS)
1. Describe and illustrate the basic components of an ecosystem. (8 Marks)
2. Explain how biotic communities in streams and rivers differ from those in ponds.
(8 Marks)
3. Construct a detailed hypothetical ecological pyramid with four tropic levels. (8 Marks)
4. Explain in details the competitive exclusion principle. (8 Marks)
5. Write short notes on the following:
(i) Food chain
(ii) Food web (8 Marks)
SECTION B (30 MARKS)
6. Discuss using examples predation as a type of organisms’ interaction. (15 Marks)
7. Discuss abiotic factors that influence abundance and distributions of animals. (15 Marks)
8. Discuss the flow of energy and matter in a named ecosystem. (15 Marks)




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