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WAEC Agricultural Science 1999 Question 33

Question 33

Crop Diseases

Gummosis disease of citrus is caused by

  1. A.aphids
  2. B.fungi
  3. C.white flies
  4. D.bacteria.
Show the answer and explanation

Answer: B (fungi)

Explanation

Citrus gummosis is caused by the fungus Phytophthora.