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Agriculture Revision Questions Question Paper

Agriculture Revision Questions

Course:A-Level

Exam Year:2010

AGRICULTURE QUESTIONS
1.0 INTRODUCTION TO AGRICULTURE

1. State TWO ways in which Agriculture contributes to industrial development.
• Agriculture provided raw materials for industries.
• It provided market for industrial products.
• Agriculture is a source of capital for starting industries.

2. Give four reasons why Agriculture I important to the country’s economy.
• Source of food.
• Provide employment.
• Earns the country foreign exchange.
• Source of raw materials for industries.
• Provided market for industrial goods.
• Source of income to farmers.

3. List four environmental factors that affect crop distribution in Kenya.
• Temperature.
• Prevailing winds.
• Soil types.
• Rainfall.

4. State two ways by which wind affects the growth of crops (1mk)
• Encourages transpiration hence water and mineral uptake.
• Wind causes physical damage to crops.
• Wind causes water stress as a result of increase evapotranspiration
• It causes stress to crops due to chilling caused by cold winds.
• It causes soil erosion which reduces soil fertility.

5. List any four features of rainfall a farmer should consider when deciding on a crop to grow. (2mks)
• Rainfall distribution/regime/pattern/spread.
• Amount of rainfall.
• Reliability/regular/frequency/certainty.
• Intensity/heavy.

6. List any four climatic factors that influence crop production. (2mks)
• Temperature.
• Light.
• Wind.
• Humidity.

7. Describe the environmental conditions that may lead to low crop yields.
• Poor soil fertility/infertile soil because of lack of application of fertilizers or manures.
• Less rainfall/unreliable rainfall/too much rainfall.
• Poor soil type resulting into water logging or excessive leaching of nutrients.
• In appropriate temperature either too high or too low.
• Excessive wind which may increase the rate of water loss from the soil.
• Extreme humidity is bad.
• Extremes of light intensity reduce photosynthesis.
• Topography/some altitudes may limit crop growth.
• Disease attack lowers yields.
• Poor weed control, weeds compete for nutrients and lower yields.
• Damage by hailstorm.

8. What is nutrients pastoration system of farming?
• A system of faming where by livestock are kept and occasionally moved from place in search of grass and water.

9. What is a plantation system of farming?
• Is a system of farming in which the crop is grown in a large scale.

10. State three characteristics of shifting cultivation as a farming system. (3mks)
• When soil fertility goes down, crops are not grown until fertility is restored.
• Plenty of arable land is available to the farming community.
• Practicable with annual crops and not with perennials.
• Agriculture output from the whole system is low.
• Inputs such as pesticides, fungicides, fertilizers are rarely used/ build up of pests is avoided by periodic movements to new lands.

11. State six reasons why Agriculture is important in Kenya’s economy (3mks)
• Provide employment.
• Source of food.
• Earns the country foreign exchange.
• Source of raw materials for industries.
• Provides market for industrial goods.
• Source of income for farmers, state.
• Improve infrastructure in the producing areas.
• Helps to create introduction relationship

12. Give two ways in which agriculture contributes directly to the development of industries. (1mk)
• Supply raw materials to industries.
• Acts as a consumer of/ market for industrial goods.

13. State two advantages of shifting cultivation. (1mk)
• Reduced use of fertilizer/manure/facilitates accumulation of plant nutrients.
• Controls certain pests/diseases
• Improved soil structure/organic matter content/checks soil erosion.

14. State any two disadvantages of pastoral nomadic system of farming (1mk)
• Low production
• Uncontrolled mating/breeding.
• Easy spread of diseases/pests/difficult to control pests and diseases.
• Encourages overstocking leading to overgrazing and soil erosion.

15. State four aspects f rainfall which are considered when choosing a crop to grow in a given area. (2mks)
• Rainfall reliability/certainty.
• Rainfall amount/regime.
• Rainfall distribution/pattern.
• Rainfall intensity/heaviness.

16. Differentiate between Olericulture and Pomoculture as used in crop production. (1mk)
• Olericulture is the growing of vegetables while Pomoculture is the growing of fruits.

17. List two aspects of light that influence crop growth. (1mk)
• Light intensity (strength).
• Light duration/ day length (light hours per day.
• Light waves - length

Agriculture Revision Questions Question Paper

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