NEET 2018 Biology question

The amnion of mammalian embryo is derived from

(1)mesoderm and trophoblast
(2)endoderm and mesoderm
(3)ectoderm and mesodermCorrect
(4)ectoderm and endoderm

Answer: (3)

Solution

The amnion is a double-layered extra-embryonic membrane: its outer layer is extra-embryonic somatopleuric mesoderm and its inner layer is ectoderm (amniotic ectoderm)

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Question ID VK-092337