WAEC Agricultural Science 2025 Objective — Question 31

Question 31 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2025 Objective paper, with the correct answer and a full explanation.

A nitrogen fixing forest tree that could be used in alley cropping is

A. Tectona grandis
B. Leucaena leucocephalaCorrect
C. Terminalia superba
D. Tertulia Africana

Explanation

Leucaena is a fast-growing leguminous tree that provides significant benefits to soil health. By fixing nitrogen, it enriches the soil and enhances fertility. It is commonly used in alley cropping systems where it is planted in rows with food crops, improving nutrient availability.

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