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Plant Ecology  Question Paper

Plant Ecology  

Course:Bachelor Of Education Science

Institution: Kenyatta University question papers

Exam Year:2007



KENYA TT A UNIVERSITY
UNIVERSITY EXAMINATIONS
2007/2008
FIRST SEMESTER
EXAMINATION
FOR THE DEGREE OF BACHELOR
OF
EDUCATION AND BACHELOR
OF SCIENCE
SBT 200:
PLANT ECOLOGY
DATE: Monday, 3rd December, 2007
TIME: 11.00 a.m. - 1.00 p.m.
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INSTRUCTIONS:
Answer ALL questions in Section A and any ONE question in Section B. Answers in
Section A should be concise and should be written within the spaces provided in the
question paper.
SECTION A.
Answer all questions within the space provided (5 Marks Each).
1. What is a Ruttner Sampler used for:
_
b). Tome or False: In the chlorophyll method of estimating primary productivity, you determine the amount of chlorophyll "a" in the light and dark bottles before and after a 3 hour time interval:
_
2. Name 5 sub-components of the Clementian Succession model: i.
_
ll.
ill.
_
IV.
_
V.
_

------
----
REG. NO.
_
3. Outline the process of Nitrification in the Nitrogen Cycle.
4. What are the characteristics of the following soil layers?
A1o
_
B20
_

,
.-
5. Name 5 biogeographic regions:
10
_
ll.
_
ill.
_
1V.
_
Vo
_
6.
Name 2 tree species that occur as dominant: I in the lowland forests of East Africa.
1.
ll.
7. True or False:
a). Hot springs and volcanoes add significant amounts of energy to the biosphere:
b). Solar flux is estimated to be 1.35 cal/cm2/min:
c). The hotter an object is, the shorter the wavelength at which it will radiate energy:
d). Ozone layer depletion has been directly linked to global wanning:
e). Tropical grasslands are classified as high productivity ecosystems:
8.
Briefly describe the characteristics of the swamp environment with regard to the following parameters:
i pH.
ii Methane:
SECTION B: ESSAY QUESTIONS (30 MARKS).
Write an essay on any 1 (ONE) of the following topics. Use the provided answer booklet.
1. Sampling designs in vegetation ecology.
2. The process of soil maturation and profile development.
3. The Ozone layer.






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