Question

why reptiles are called true land vertebrates

Answer 1

Reptiles are called so because they are mostly living in the land, unlike the amphibians which can survive and thrive in both land and water.

Answer 2

Legs were arranged to support the body’s weight more effectively than in amphibians, allowing reptile bodies to be larger and to run. Reptilian lungs were more developed with a greatly increased surface area for gas exchange than the saclike lungs of amphibians. The three-chambered heart of reptiles was more efficient than the three-chambered amphibian heart. In addition, the skin was covered with hard, dry scales to minimize water loss. Thus, reptiles are called true land vertebrates.

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