Home Biology Organisms and Populations Which of the following structures/process al…
Biology Organisms and Populations Single Correct MCQ
Published on: August 21, 2026

Which of the following structures/process allowed reptiles to complete their life cycle on land and to become the first land organisms?

A
Bony endoskeleton
B
Amniotic eggs
C
Oviparity
D
Internal fertilization

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Verified by Experts
The correct answer is:
B

The evolution of amniotic eggs allowed reptiles to reproduce completely on land because the embryo was protected from drying out and supplied with nourishment inside the egg. This adaptation made reptiles the first truly successful land vertebrates.

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