KCSE Topic Questions: Factors Influencing Agriculture

KCSE Topic Questions: Factors Influencing Agriculture

Environmental & Soil Factors

1. List four environmental factors that affect crop distribution in Kenya.
2. State two ways by which wind affects the growth of crops.
3. Give two roles of micro-organisms in the soil that are beneficial to crops.
4. State three properties of soil that are influenced by its texture.
5. List down the four aspects of rainfall that affect agriculture.
6. Describe the environmental conditions that may lead to low crop yields.
7. Outline three effects of soil organisms which benefit crop growth.
8. State two causes of hard pan in a crop yield.
9. Name two processes of rock weathering.
10. Differentiate between soil texture and soil structure.
11. State three benefits of good soil structure in crop production.
12. List two aspects of light that influence crop growth.
13. Give three reasons why soil is important to crops.
14. State two benefits of optimum soil temperature in crop production.
15. Give three factors of soil that influence soil productivity.
16. Give four reasons why a well-drained soil is suitable for crop production.
17. State three advantages of adding organic matter to sandy soil.
18. State two roles of good soil aeration in crop growth.

Experimental Study (Soil Capillarity)

Study the diagram provided in the document showing soil types G, H, and J and answer:

• i) What is the experiment represented above designed to study?
• ii) Name the three soil types G, H, and J.
• iii) What is the characteristic texture of soil types G and J?
• iv) State how a farmer would improve the structure of soil type G.

Marking Scheme: Factors Influencing Agriculture

Environmental Factors & Weather

1. List four environmental factors that affect crop distribution in Kenya. ¹

• Temperature/altitude ²
• Prevailing winds ³
• Soil types ⁴
• Rainfall ⁵