VAN-0086
QUESTION
Trophoblast give rise the formation of?
OPTIONS
(A) Yolk sac
(B) Amnion
(C) Primitive
(D) Placenta
ANSWER
(D) Placenta
EXPLANATION
The trophoblast is the outer layer of the early blastocyst and contributes substantially to formation of the fetal part of the placenta, particularly the chorionic component. The yolk sac and amnion arise from other embryonic extraembryonic components, so placenta is the best answer.
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