Which is not one of the extraembryonic membranes that form early in the development of the embryo?
A)Chorion
B)Placenta
C)Amnion
D)Yolk sac
E)All of these are correct.

Question

Quizplus · Accepted Answer

The placenta is not an extraembryonic membrane, but rather an organ that forms from the chorion and maternal tissue during development. The chorion, amnion, and yolk sac are all extraembryonic membranes that form early in embryonic development.

Which Is Not One of the Extraembryonic Membranes That Form