Q. In human secretion, which of the following is used to confirm implantation of emryo?

A) Gastrula
B) Trophoblast
C) Inner mass of cell
D) Blastocyst
Explanation

After one week of fertilization, implantation begins to starts. During implantation, the trophoectoderm (trophoblast) comes in contact with the endometrium of the uterus and sinks into a pit formed in the endometrium and gets completely burried in the endometrium.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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