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Nare 200: Natural Resources Ecology Question Paper

Nare 200: Natural Resources Ecology

Course:Bachelor Of Science In Natural Resources Mangement

Institution: Egerton University question papers

Exam Year:2013

SECTION A: ANSWER ALL QUESTIONS

1. Describe the following terms as used in ecology: (10 Marks)
a. Food chain
b. Biological attributes
c. Paradox of scarcity
d. Growth efficiency
e. Commensalism
2.(a) List and briefly describe the methods of studying population size. (5 Marks)
(b) List, in an outline form, the components of an ecosystem. (5 Marks)
3. What are survivorship curves? Describe the various types of such curves. (5 Marks)
4.(a) Why are population distributed at random? (3 Marks)
(b) List the fluctuation patterns of populations. (5 Marks)
5. How is ecological knowledge used in managing natural resources. (7 Marks)

SECTION B: ANSWER THREE QUESTIONS ONLY

6. Describe organism response to nutrient availability. (10 Marks)

7.(a) Distinguish between energy and nutrient transfers. (2 Marks)
(b) Draw a sketch of a generalized food web showing all the components. (8 Marks)
8. What are the sources of phosphorous? Draw a sketch of phosphorous cycle, indicate all the parts. (10 Marks)
9.(a) Explain the role of carbon dioxide in global warming. (2 Marks)
(b) Draw a sketch of the carbon cycle. (8 Marks)

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