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JAMB Biology 1995 Question 48

Question 48

Adaptation

The colour of the ventral surface of a fish is lighter than that of the dorsal. This is mainly

  1. A.an adaptation for movement
  2. B.an adaptation for camouflage
  3. C.for attracting mates
  4. D.for regulating body temperature.
Show the answer and explanation

Answer: B (an adaptation for camouflage)

Explanation

Seen from below, the pale belly blends with the bright water surface; seen from above, the dark back blends with the deep water. This countershading hides the fish.