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JAMB Biology 1984 Question 14

Question 14

Support and Movement

The dorsal and anal fins of fish are used for

  1. A.upward movements
  2. B.controlling rolling movements
  3. C.downward movements
  4. D.steering
  5. E.buoyancy.
Show the answer and explanation

Answer: B (controlling rolling movements)

Explanation

The unpaired dorsal and anal fins keep the fish upright, stopping it from rolling and yawing.