An important evolutionary step for reptiles was______ .
A) the formation of a true spine
B) the growth of scales from armor plating
C) lungs that could hold air
D) the development of shell- covered eggs

Question

Quizplus · Accepted Answer

The development of shell-covered eggs was a significant evolutionary step for reptiles, allowing them to lay eggs on land without the risk of dehydration. This adaptation freed reptiles from the need to return to water to reproduce, unlike their amphibian ancestors, and was crucial for their success in terrestrial environments.

An Important Evolutionary Step for Reptiles Was______