Which extraembryonic membrane prevents desiccation of the embryo inside the uterus?
A
Yolk sac
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B
Amnion
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C
Chorion
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D
Allantois
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Solution
The correct option is B Amnion The amnion is a thin and tough membrane that protects the developing embryo. It is filled with the amniotic fluid which causes the amnion to expand and become the amniotic sac. This serves to provide a protective environment for the developing embryo.
Amnion also prevents the desiccation of the embryo inside the uterus.
Yolk sac nourishes the embryo.
Chorion helps in the development of the placenta.
Allantois is a small sac like structure that helps furnish some blood vessels to the placenta.