JAMB Biology 1994 Question 10

Question 10

Adaptation

Which is the most important adaptation of a bony fish to life in water?

  1. A.The possession of a streamlined shape
  2. B.The presence of overlapping scales
  3. C.The covering of the body by thin film of slime
  4. D.The possession of a caudal fin.
Show the answer and explanation

Answer: A (The possession of a streamlined shape)

Explanation

A streamlined (spindle-shaped) body cuts down water resistance, so the fish can swim easily. Scales and slime protect the body, and the tail fin gives push.