The feature which enabled reptiles to dominat | vedclass

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(D) Reptiles were the first vertebrates to become fully adapted to life on land. The key evolutionary innovation that allowed them to dominate the ter

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Large eggs

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(D) Reptiles were the first vertebrates to become fully adapted to life on land. The key evolutionary innovation that allowed them to dominate the terrestrial environment for $100$ million years was the development of the amniotic egg. These eggs have a protective shell that prevents desiccation (drying out) and allows the embryo to develop in a self-contained aquatic environment,independent of external water sources. This adaptation freed reptiles from the necessity of returning to water for reproduction,unlike amphibians.

The feature which enabled reptiles to dominate the land fauna for $100$ million years was their

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