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JAMB Biology 2003 Question 10

Question 10

Animal Kingdom

An insect whose economic importance is both harmful and beneficial is the

  1. A.Tsetsefly
  2. B.Blackfly
  3. C.Mosquito
  4. D.Butterfly.
Show the answer and explanation

Answer: D (Butterfly.)

Explanation

Butterfly caterpillars eat crop leaves (harmful), but the adults pollinate flowers (beneficial). The tsetse fly, blackfly and mosquito are mainly harmful disease carriers.