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Question

Layer of blastocyst that gives rise to ectoderm is

A
Trophoectoderm
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B
Embryo disc
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C
Cnidoblast
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D
Amnion
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Solution

The correct option is C Embryo disc
The development of human before birth is called prenatal development. Shortly after implantation, gastrulation occurs. The two same mesoderm cells from the notochord which includes layered embryonic disc which soon splits open and the primitive development of the neural tube forerunner of the brain and streak develops into ectoderm. During prenatal period, the blastocyst develops and implants into endometrium.
Hence the layer of blastocyst that gives rise to ectoderm is Embryo disc.
So, the correct answer is 'Embryo disc'.

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