The primary germ layers develop from the
A)blastocyst.
B)embryonic disc.
C)uterus.
D)morula.

Question

Quizplus · Accepted Answer

The embryonic disk is a group of cells that forms in the blastula stage of embryonic development, and it gives rise to the three primary germ layers: endoderm, mesoderm, and ectoderm. Therefore, the correct option is B. The blastocyst is an earlier stage of development that consists of a hollow ball of cells that implants into the uterus. The uterus is the reproductive organ where the fertilized egg (zygote) implants and develops into an embryo. The morula is a stage in the early development of embryos, which is formed by the division of the zygote into multiple cells.

The Primary Germ Layers Develop from the