What happens during gastrulation?
A) The three primary germ layers are formed.
B) The embryo implants in the wall of the uterus.
C) The placenta becomes functional.
D) The chorion disintegrates.
E) The amnionic fluid appears.

Question

Quizplus · Accepted Answer

Gastrulation is the process by which the three primary germ layers (endoderm, mesoderm, and ectoderm) are formed. These germ layers give rise to all the tissues and organs of the embryo.

What Happens During Gastrulation