A) inner cell mass
B) trophoblast
C) formative cells
D) follicle cells
Correct Answer: B
Solution :
Extraembryonic membranes are membranes External to the embryo proper that are involved in the protection and nutrition of the embryo. The trophectoderm is the outer layer of cells of the early mammalian embryo. It gives rise to extraembryonic structures such as the placenta.
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