The __________ Attaches to the Endometrium on About the 7th

Question

The __________ attaches to the endometrium on about the 7th day of development.
A)morula
B)embryo
C)blastocyst
D)zygote

Accepted Answer

The blastocyst is the stage of development that attaches to the endometrium on about the 7th day. The morula is an earlier stage of development consisting of a ball of cells, and the zygote is the initial single cell formed by fertilization. The embryo is a later stage of development after implantation has occurred.