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WAEC Agricultural Science 2022 Objective — Question 31

Question 31 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

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Which of the following crops is correctly matched with a disease that affects it?

  • A. Maize – smutCorrect
  • B. Sorghum – scab
  • C. Rice – black arm
  • D. Yam – blast

Explanation

Common smut is a well-known maize disease, caused by the fungus Ustilago maydis, which can remain viable in the soil for several years.

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