State whether the following statements are true or false . The placenta formed from the yolk sac is called allantoic.
A
True
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B
False
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Solution
The correct option is B False The fetus consists of four fetal membranes, yolk sac, amnion, chorion, and allantois. Allantois forms the umbilical arteries and vein which grow up to the chorion. It also forms blood cells.