The lungs of a frog are

Muscular and spongy

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Thin walled and distensible

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Spongy and unlobed

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None of the above

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Solution

The correct option is D Thin walled and distensible
Lungs are poorly developed in frogs. They are oval, thin-walled, and highly elastic. They are freely suspended inside the peritoneal cavity on either side of the heart.
Besides pulmonary respiration, frogs respire through cutaneous respiration and buccal respiration as well.
So the correct answer is option B.

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Similar questions

Assertion (A) - Amphibians such as frogs can breathe underwater as well as on land.

Reason (R) - Frogs breathe through lungs on land and through their moist and slimy skin underwater.

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