The main function of trophectoderm in mammalian embryo is

Options

A. formation of the body of developing embryo
B. formation of future ectoderm
C. formation of placenta.
D. implantation

Answer

D

Explanation

During embryonic development, the blastocyst formed consists of an outer envelope of cells called the trophoblast and the inner cell mass. The cells of trophoblast form chorion and amnion and hence part of placenta.