This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Embroyo develops from ? 
Select and explain. 
A. Inner cell mass, B. Troploblasts, C. Outer cell mass, D. None of the above
A: Inner cell mass
Answer: A: Inner cell mass 
Explanation: Ans. is'a'i.e., Inner cell mass[Ref Textbook of embryology p. 24)As the morula enters the uterine cavity, uterine fluid diffuses through zona pellucida and fills small intercellular gaps between blastomeres, and morula is conveed to blastocyst.Embryoblast :A group of centrally located cells of inner cell mass and later give rise to tissues of the embryo proper.