The ________ is a hollow ball of cells.
A) blastocyst
B) gastrula
C) morula
D) embryo
E) None of the answers are correct.

Question

Quizplus · Accepted Answer

The blastocyst is the early stage of embryonic development characterized by a hollow ball of cells with an inner cell mass, which will eventually form the embryo. The morula is an earlier stage of development that consists of a solid ball of cells. The gastrula is a later stage of development where the blastula is transformed into a three-layered structure. The embryo is the developing organism after fertilization. Therefore, only option A accurately describes a hollow ball of cells.

The ________ Is a Hollow Ball of Cells