What stage of preembryonic development results in a solid ball of nearly identical cells?
A) blastomere
B) blastocyst
C) zygote
D) morula

Question

Quizplus · Accepted Answer

The solid ball of nearly identical cells is called a morula and is formed during the pre-embryonic stage of development after several rounds of cell divisions following fertilization. Choice A, blastomere, refers to any individual cell that makes up the morula. Choice B, blastocyst, comes later in development and refers to the stage where the morula becomes a fluid-filled hollow ball with an inner cell mass and an outer layer of cells. Choice C, zygote, is the initial cell formed by the fusion of sperm and egg.

What Stage of Preembryonic Development Results in a Solid Ball