During the embryonic stage, the primary germ layers develop from the
A)placenta.
B)blastocyst.
C)embryonic disc.
D)morula.

Question

Quizplus · Accepted Answer

The embryonic disc is where the three primary germ layers (ectoderm, mesoderm, and endoderm) develop during the embryonic stage. The placenta is not a part of the developing embryo itself, but rather forms from the outer layer of cells surrounding the embryo. The blastocyst and morula are earlier stages of development before the formation of the embryonic disc and primary germ layers.

During the Embryonic Stage, the Primary Germ Layers Develop from the