The solid mass of cells formed when the zygote begins to divide is called the:
A) blastocyst.
B) trophoblast.
C) morula.
D) embryo.

Question

Quizplus · Accepted Answer

The solid mass of cells formed when the zygote begins to divide is called the morula. The blastocyst is a later stage in embryonic development where there is a hollow cavity in the center of the mass of cells. The trophoblast is the outer layer of cells in the blastocyst that contributes to the formation of the placenta. The embryo is the later stage of development after the blastocyst, where the cells have begun to differentiate into different tissues and organs.

The Solid Mass of Cells Formed When the Zygote Begins