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+1 vote
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in Biology by (74.3k points)

Choose the correct one

(1) A- Chorionic villi  forms placenta

(2) B-Yolk sac  Prevents desiccation of embryo

(3) C- umbilical cord  Haemopoiesis

(4) D- Blastocyst  Forms the embryo

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1 Answer

+1 vote
by (76.1k points)

(1) A- Chorionic villi  forms placenta

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