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GCE Agricultural Science 1989 Question 36

Question 36

Crop Pests

Contact insecticides are used to control

  1. A.pod borers of legumes
  2. B.stem borers of cereal
  3. C.leaf beetles of legumes
  4. D.peel worm of legumes
  5. E.bollworms of cotton.
Show the answer and explanation

Answer: C (leaf beetles of legumes)

Explanation

Contact insecticides kill insects they touch, so they work on pests that feed exposed on leaves; borers hide inside plant parts.