Q. The presence of which structure is common to frog and snake with respect to respiration?

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Solution:

Both snakes and frogs (adults) respire through lungs. Frog tadpoles breathe through gills under water, but adult frogs breathe through lungs and moist skin. Diaphragm is absent in both frogs and snakes. Only frogs utilise their buccal cavity to carry out buccopharyngeal respiration.