In an amniotic egg,the amnion
A)serves as a repository for wastes produced by the developing embryo.
B)serves as a respiratory surface for the exchange of oxygen and carbon dioxide.
C)is a fluid-filled sac that protects the embryo from shocks and adhesions.
D)develops into the chorio-allantoic membrane.

Question

Quizplus · Accepted Answer

The amnion is a fluid-filled sac that envelops the developing embryo, protecting it from shocks and adhesions. It serves as a cushion and shock absorber, and also allows for movement and growth of the embryo. While the amniotic fluid does contain some waste products from the developing embryo, it primarily serves as a protective cushion. Oxygen and carbon dioxide exchange occurs across the chorio-allantoic membrane, not the amnion.

In an Amniotic Egg,the Amnion