ZoologyAll the following are advanced characters of mammals over reptiles except

All the following are advanced characters of mammals over reptiles except

A
protect their unborn young in wombs
B
intelligent in sensing
C
cleidoic eggs
D
presence of pinnae

Solution:

Cleidoic eggs are the eggs covered by a porous calcareous shell. It is the character of reptiles and birds. Some mammals, prototherians, produce eggs with shell which is a primitive character that resemble the reptiles.