WAEC Agricultural Science 2024 Objective — Question 18

Question 18 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2024 Objective paper, with the correct answer and a full explanation.

18. Which of the following fertilizers would not be required by a crop with the illustrated root system?

A. Potassium sulphate
B. Ammonium nitrate
C. Rock phosphate
D. Magnesium sulphateCorrect

Explanation

Leguminous plants (with the illustrated taproot/nodulated system) do not require ammonium sulphate fertilizer because their nitrogen need has been catered for through symbiotic nitrogen fixation.

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