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GCE Agricultural Science 1989 Question 33

Question 33

Crop Pests

Thrips cause serious mechanical damages to crops by their

  1. A.feeding activities on flowers, leaves and fruits
  2. B.laying eggs on plants
  3. C.sucking of the sap of crops
  4. D.burrowing activities causing damping off in crops
  5. E.activities as vectors of bacterial diseases.
Show the answer and explanation

Answer: A (feeding activities on flowers, leaves and fruits)

Explanation

Thrips rasp the surface of flowers, leaves and fruits as they feed, scarring them.