1.

Air bladder helps in gaseous exchange. It helps in maintaining buoyancy.

Answer»
  • The characteristics that contribute to the success of reptiles on land are as follows: 
  • The presence of dry and comified skin with epidermal scales or scutes which prevent the loss of water. 
  • The presence of metanephric kidney. 
  • They are uricotelic (they excrete uric acid to prevent the loss of water).


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