Which physical feature makes it possible for amniotes to be completely terrestrial?
A) their skin
B) their lungs
C) their eggs
D) their four limbs
E) their brains

Question

​Which physical feature makes it possible for amniotes to be completely terrestrial?
A) ​their skin
B) ​their lungs
C) ​their eggs
D) ​their four limbs
E) ​their brains

Quizplus · Accepted Answer

Amniotes, which include reptiles, birds, and mammals, are distinguished by their ability to lay eggs on land or bear live young, thanks to the amniotic egg. This egg has membranes that protect the embryo, allowing it to develop outside of water, thus enabling a fully terrestrial life cycle.

​Which Physical Feature Makes It Possible for Amniotes to Be

Which Physical Feature Makes It Possible for Amniotes to Be