Which structure is a hollow ball of cells that develops and implants into the uterus?
A) Blastocyst
B) Embryo
C) Zygote
D) Morula

Question

Quizplus · Accepted Answer

The blastocyst is a hollow ball of cells that forms about 5 days after fertilization and implants into the uterine lining about a week later. It is the structure that ultimately develops into the fetus. The embryo is the stage of development after the blastocyst, when the cells begin to differentiate and organs start to form. The zygote is the initial cell formed by the fusion of the egg and sperm. The morula is the compact mass of cells that forms before the blastocyst stage.

Which Structure Is a Hollow Ball of Cells That Develops