WAEC Biology 2013 Objective — Question 13
Question 13 of 60 from the West African Examinations Council (WAEC) Biology 2013 Objective paper, with the correct answer and a full explanation.
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Which of the following organs are used for gaseous exchange in a mature toad?
- A. Gills, lungs and eardrum
- B. Lungs, mouth and eardrum
- C. Mouth, skin and epithelial cells
- D. Skin, lungs and mouthCorrect
Explanation
The structures used for gaseous exchange in a mature toad are the skin, lungs and mouth. Gas exchange through the skin is cutaneous respiration, through the lungs is pulmonary respiration, and through the mouth is buccal respiration.
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