A) Compact spongy masses
B) Thin-walled elastic, hollow bags
C) Thick-walled nonelastic, hollow bags
D) Thick-walled nonelastic solid masses
Correct Answer: B
Solution :
The lungs of frog are two delicate, elastic, pinkish, ovoid, thin walled hollow sacs lying on either side of the oesophagus.You need to login to perform this action.
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