Give scientific reasons: Enzymes are secreted from the cells of trophoblast.

(N/A) Enzymes are secreted from the trophoblast cells to digest specific tissues and blood vessels of the uterine wall,which facilitates the process of implantation.
As the blastocyst reaches the uterus,the inner wall of the uterus (endometrium) develops and partially surrounds the embryo.
To ensure the embryo is firmly fixed to the uterine wall,the trophoblast cells release proteolytic enzymes that digest the endometrial lining.
This enzymatic action creates a site for the embryo to embed itself,a process known as implantation.