A) Diaphragm
B) Skin
C) Buccal cavity
D) Lungs
Correct Answer: A
Solution :
Buccopharyngeal respiration is found in frogs. Like skin, the mucosa of buccopharyngeal cavity in frog is also ideally adapted for gaseous exchange. Hence, while quietly floating upon water surface, and even when resting upon land, frogs respire by their buccopharyngeal cavity also.
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