Agricultural Science Waec Past Questions And Answers (Objective and Theory)

Here’s a set of 20 WAEC Agricultural Science questions, including a theory section with 5 questions. Each multiple-choice question has four options, and the correct answer is highlighted.

 

Multiple Choice Questions:

 

What is the primary function of chlorophyll in plants?

 

A. Respiration

B. Photosynthesis

C. Transpiration

D. Germination

Correct Answer: B

Which of the following is a leguminous crop?

 

A. Maize

B. Rice

C. Soybean

D. Wheat

Correct Answer: C

Which farming practice involves the cultivation of crops and rearing of animals on the same piece of land?

 

A. Monoculture

B. Mixed farming

C. Polyculture

D. Extensive farming

Correct Answer: B

What is the primary purpose of adding fertilizers to the soil?

 

A. Improve soil structure

B. Control pests

C. Provide nutrients to plants

D. Increase soil pH

Correct Answer: C

Which of the following is a method of weed control?

 

A. Irrigation

B. Mulching

C. Pruning

D. Threshing

Correct Answer: B

Which agricultural practice involves rotating different crops in the same field to enhance soil fertility?

 

A. Monoculture

B. Alley cropping

C. Crop rotation

D. Contour plowing

Correct Answer: C

What is the major function of the ovary in a flower?

 

A. Production of pollen

B. Protection of the flower

C. Formation of seeds

D. Attraction of pollinators

Correct Answer: C

In poultry farming, what is the term for the artificial incubation of eggs?

 

A. Brooding

B. Candling

C. Hatching

D. Culling

Correct Answer: C

Which farming practice involves growing crops without the use of synthetic fertilizers and pesticides?

 

A. Organic farming

B. Hydroponics

C. Aeroponics

D. Precision farming

Correct Answer: A

What is the primary purpose of a windbreak in agriculture?

 

A. Reduce soil erosion

B. Increase sunlight exposure

C. Control pests

D. Enhance irrigation

Correct Answer: A

Theory Section:

 

Explain the term ‘crop rotation’ and its significance in sustainable agriculture.

 

Discuss the importance of pollination in fruit production.

 

Describe the process of nitrogen fixation in leguminous plants.

 

Examine the role of water in agricultural practices and the potential consequences of water scarcity on crops.

 

Elaborate on the benefits and challenges of adopting organic farming methods.