Experimental destruction of cells of the hypoblast of a developing chick would most immediately impair
A) formation of the primitive groove.
B) movement of surface cells into the gastrula.
C) cleavage.
D) formation of the blastocoel.
E) formation of extraembryonic membranes.

Question

Quizplus · Accepted Answer

The hypoblast gives rise to the extraembryonic membranes, which are essential for the proper development of the embryo. Thus, destruction of cells of the hypoblast would impair the formation of extraembryonic membranes.

Experimental Destruction of Cells of the Hypoblast of a Developing