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GCE Biology 1990 Question 18

Question 18

Respiration

Gaseous exchange takes place in the adult toad through the

  1. A.buccal cavity, bladder and lungs
  2. B.buccal cavity, skin and lungs
  3. C.tympanic membrane, lungs and gills
  4. D.buccal cavity, skin and spiracle
  5. E.gills, skin and buccal cavity
Show the answer and explanation

Answer: B (buccal cavity, skin and lungs)

Explanation

An adult toad breathes through its moist skin, the lining of its mouth (buccal cavity) and its lungs.