The attachment of the mammalian blastocyst to the uterine wall is

Options

A. Incest
B. Implantation
C. Intromission
D. Incorporation

Answer

B

Explanation

Implantation is the embedding of the blastocyst into the endometrium of uterus. Blastocyst comes in contact with endometrium in the region of embryonic knob or embryonic disc and adheres to it. The surface cells of trophoblast secrete lytic enzymes which cause corrosion of endometrial lining.