Which one takes part in formation of pl...

Which one takes part in formation of placenta?
(a) Only trophoblast
(b) Only allantois
(c) Trophoblast and mesoderm
(d) Trophoblast, mesoderm and allantois

A

Only trophoblast

B

Only allantois

C

Trophoblast and mesoderm

D

Trophoblast, mesoderm and allantois.

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The correct Answer is:

D

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