Of the two functional areas of the blastocyst, the three primary germ layers form from the ________.
A) amnion
B) morula
C) inner cell mass
D) trophoblast

Question

Quizplus · Accepted Answer

The three primary germ layers (ectoderm, mesoderm, and endoderm) form from the inner cell mass of the blastocyst, which gives rise to the embryo itself. The trophoblast, on the other hand, contributes to the development of the placenta and other supporting structures. The amnion is a membrane that forms later on and surrounds the embryo, providing protection and cushioning, while the morula is an earlier stage of development before the blastocyst forms.

Of the Two Functional Areas of the Blastocyst, the Three