Ens 230: Principles Of Environmental Ecology Question Paper
Ens 230: Principles Of Environmental Ecology
Course:Bachelor Of Environmental Studies
Institution: Kenyatta University question papers
Exam Year:2011
DATE: Friday, 25th November, 2011
TIME: 8.00 a.m. – 10.00 a.m.
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INSTRUCTIONS:
1.
Answer question ONE and any other THREE.
2.
Illustrate your answers with suitable examples, diagram and figures wherever
appropriate.
Q.1
a)
Explain briefly the laws of thermodynamics and how they relate to
ecology.
(10 marks)
b)
Discuss global climate change and its impact on Ecosystems as a man
made phenomena and suggest measures to reverse the trend
(15 marks)
Q.2
a)
Explain briefly various types of ecological production in ecosystems
(5 marks)
b)
Compare net primary production in various world ecosystems and explain
why such variation occurs
(10 marks)
Q.3
Describe food chain and food web. Using examples, discuss energy flow through
two food chains.
(15 marks)
Q.4
a)
Discuss the nitrogen cycle
(10 marks)
b)
Explain the impacts of human activities on the Nitrogen Cycle.
(5 marks)
Q.5
Discuss the role of mutualism in different ecosystems.
(15 marks)
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