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JAMB Biology 1993 Question 50

Question 50

Evolution

Which of the following organisms has lost the pentadactyl limb structure?

  1. A.Bat
  2. B.Fish
  3. C.Frog
  4. D.Pigeon
Show the answer and explanation

Answer: B (Fish)

Explanation

Bats, frogs and pigeons all have five-digit (pentadactyl) limbs modified for their way of life; fish have fins instead of pentadactyl limbs.