Question

why the member of dipnoi have developed lungs for the purpose of respiration ?
for 2 marks)....

Answer 1

Hi Zahrah :-
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@ The Dipnoi have developed lungs that allow them to breathe in under water and in low level of oxygen. 
@ They Have developed lungs i.e. modified swim bladder. which allow them to absorb oxygen and remove the unwanted wastes.
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                                                                                              -SahilLincoln