In land vertebrates,the function of the chorion is to
A)become umbilical cord.
B)enclose the entire embryonic system and then fuse to form the chorioallantoic membrane.
C)grow from the embryonic hindgut to become a repository for the wastes of metabolism.
D)surround the embryo and provide a marine environment for development.

Question

Quizplus · Accepted Answer

The chorion is a membrane that surrounds the embryo in land vertebrates. Its main function is to enclose the entire embryonic system and then fuse with the allantois to form the chorioallantoic membrane, which helps in the exchange of gases and nutrients with the mother's blood supply.

In Land Vertebrates,the Function of the Chorion Is to