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    				| 1. | The lungs is frogs areA. Compact spongt massesB. Thin-walled elastic, hollow bagsC. Thick-walled nonelastic, hollow bagsD. Thick-walled nonelastic solid masses | 
| Answer» Correct Answer - B The lungs of frog are two delicate, elastic, pinkish, ovoid, thin walled hollow sacs lying on either side of the oesophagus. | |