The rearrangement and migration of the cells of the bilaminar embryonic disc forms the trilaminar embryonic disc in a process called:
A) gastrulation.
B) formation of the blastula.
C) organogenesis.
D) fertilization.

Question

Quizplus · Accepted Answer

Gastrulation is the process by which the bilaminar embryonic disc (consisting of the epiblast and hypoblast) is rearranged and migrated to form the trilaminar embryonic disc (consisting of the ectoderm, mesoderm, and endoderm).

The Rearrangement and Migration of the Cells of the Bilaminar