Multiple choice

Embryonic stem cells are derived from

  1. inner cell mass of blastocyst

  2. blastocoel

  3. inner cell mass of gastrula

  4. cells of trophoblast

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A Correct answer
Explanation

Inner cell mass of blastocyst  or emryoblast lies as a mass of cells in blastocyst  and give rise to embryonic stem cells and this part is used in stem cell research.