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Phantasy [73]
4 years ago
7

The ______ becomes the placenta. a. yolk sac b. chorion c. amnion d. allantois

Biology
1 answer:
LekaFEV [45]4 years ago
3 0
I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
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