Question

Thin walled air sacs are connected with lungs in:

• A. Amphibians
• B. Reptiles
• C. Birds
• D. Mammals

Answer 1

The correct option is C Birds

A) Amphibians respire through gills, buccal cavity, and lungs. They do not have air sacs.

B) Reptiles respire through lungs which are not supplemented by air sacs.

C) Birds respire through lungs which are supplemented by thin-walled air sacs which help in respiration and flight.

D) Mammals respire through well-developed lungs.

So, the correct answer is 'Birds.'