Question

The amnion of the mammalian embryo is derived from

• A. Mesoderm and trophoblast
• B. endoderm and mesoderm
• C. ectoderm and mesoderm
• D. ectoderm and endoderm

Answer 1

The correct option is A Mesoderm and trophoblast

The amnion, yolk sac, chorion and allantois are extraembryonic membranes or foetal membranes. They surround the developing embryo. They facilitate nutrition, respiration and excretion for the embryo.

The amnion surrounds the embryo and encloses a fluid-filled cavity. The amniotic fluid enclosed with in the cavity protects the embryo from mechanical stress. Amnion of the mammalian embryo is derived from the germ layers ectoderm and mesoderm.