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WAEC Biology 2006 Question 17

Question 17

Respiration

Gaseous exchange occurs through the following structures in some organisms except

  1. A.spiracle and tracheae
  2. B.alveoli and lungs
  3. C.stomata and lenticels
  4. D.chloroplast and plastids
Show the answer and explanation

Answer: D (chloroplast and plastids)

Explanation

Chloroplasts and other plastids are organelles for making or storing food; they are not breathing surfaces.