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WAEC Biology 2001 Question 18

Question 18

Respiration

Which part of the gill of fish is involved in gaseous exchange?

  1. A.Gill slits
  2. B.Gill bars
  3. C.Gill covers
  4. D.Gill filaments
Show the answer and explanation

Answer: D (Gill filaments)

Explanation

The thin, blood-filled gill filaments have a large surface where oxygen and carbon dioxide are exchanged.