Solution:
Reptiles are cold blooded (poikilothermy), while the birds are warm blooded (homeothermy).
Both reptiles and birds exhibit oviparity, pulmonary respiration and internal fertilisation.
Which of the following characters is not shared by reptiles and birds?
Reptiles are cold blooded (poikilothermy), while the birds are warm blooded (homeothermy).
Both reptiles and birds exhibit oviparity, pulmonary respiration and internal fertilisation.