During gastrulation,
A) the blastomeres fuse.
B) the placenta penetrates the endometrium.
C) three germ layers are formed.
D) cells from the hypoblast move to the epiblast.
E) the neural tube closes.

Question

Quizplus · Accepted Answer

During gastrulation, the three germ layers (ectoderm, mesoderm, and endoderm) are formed.

Answer: D
 During gastrulation, cells from the hypoblast (also known as the primitive endoderm) move to the epiblast to form the endoderm layer.

Therefore, the best choices are C and D.

During Gastrulation