The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the
A) archenteron.
B) blastula.
C) coelom.
D) germ layer.
E) blastocoel.

Question

Quizplus · Accepted Answer

The blastopore is the site of invagination during gastrulation, which creates the archenteron, a cavity that will give rise to the digestive tract of the embryo.

Answer choices B, C, D, and E are all incorrect because they do not accurately describe the role or nature of the blastopore. The blastula refers to an earlier stage of development before gastrulation has occurred, the coelom refers to the body cavity that forms later in development, and the germ layer refers to one of the three layers of cells that give rise to the various tissues and organs of the embryo. The blastocoel refers to the fluid-filled cavity that forms within the blastula.

The Blastopore Denotes the Presence of an Endoderm-Lined Cavity in the Developing