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Environmental Ecology I Question Paper

Environmental Ecology I 

Course:Bachelor Of Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2009



KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
OF ENVIRONMENTAL SCIENCE

ENS 200:
ENVIRONMENTAL ECOLOGY I

DATE: Wednesday, 1st April, 2009

TIME: 8.00 a.m. – 10.00 a.m.
------------------------------------------------------------------------------------------------------------
INSTRUCTIONS:
Answer question ONE and any other THREE.
1. a) Explain
the
following:
i)
Ecological
niche
(3
marks)
ii)
Competitive
exclusion
principle
(3
marks)
iii)
Net
Primary
Productivity
(3
marks)

b)
Using a given biotic factor, explain the law of tolerance.
(6 marks)

c)
Explain how species interact in an ecosystem

(10 marks)

2.
“Specialization in feeding habits have allowed species to share limited resources.”
Discuss.







(15 marks)
3.
a)
Discuss
the
nitrogen
cycle.

b)
Explain the impacts of human activities on the Nitrogen Cycle
(15 marks)
4.
Discuss the impacts of the destruction of the tropical rain forest and how the
effects
can
be
mitigated.
(15
marks)
5.
“If there was no Organic decomposition there would be no Live”. Discuss.










(15 marks)
============




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