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Erc 204: Comparative Studies Of Agricultural Systems Question Paper

Erc 204: Comparative Studies Of Agricultural Systems

Course:Bachelor Of Science In Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2012

DATE: THURSDAY 29TH MARCH 2012
TIME: 11.00 A.M – 1.00 P.M

INSTRUCTIONS
Answer Question ONE and any other THREE Questions.
Q.1) (a)
With the aid of a diagram, describe the main elements of an agricultural
system.

(8 marks)

(b)
What is the importance of definite system boundaries and how are
they set up.

(5 marks)

(c)
What distinguishes agricultural systems from other natural systems. (6 marks)

(d) Explain how an agricultural system in its entirety is different from
sum of its parts.

(6 marks)

Q.2) (a)
Give any five factors that determine the occurrence of different types of
global agricultural systems.

(5 marks)

(b)
Based on structure, describe any five world agricultural systems. (10 marks)

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Q.3) (a)
The global temporal development of agricultural systems indicate that hunting
and gathering of food in Africa persisted for long compared to other regions.
Explain.

(5 marks)

(b)
Discuss any two hypotheses that explain the shift from hunting and gathering of

food to settled agriculture.

(10 marks)

Q.4) (a)
Explain the use of the following terms in the occurrence of world crops. (4 marks)

(i)
Cropland

(ii)
Crop fraction
(iii)
Relative crop fraction
(iv)
Cultivation intensity

(b)
How is the distribution of major cereal crops related to world
climatic zonation?

(11 marks)

Q.5) (a)
Describe the main features of agricultural systems in sub-Saharan

Africa.

(7 marks)

(b)
There is need for a second green revolution in sub-Saharan Africa.
Discuss.

(8 marks)

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Erc 204: Comparative Studies Of Agricultural Systems Question Paper

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