Multiple Choice
You observe an animal embryo that is more-or-less spherical in shape. Projecting from the surface along one 'side' of the embryo is a pair of ridges, separated by a shallow groove. A transverse section through the embryo, perpendicular to these ridges, shows that the interior of the embryo is a fluid-filled cavity, and that the body wall consists of three layers of cells. This embryo is undergoing
A) neurulation.
B) gastrulation.
C) morphogenesis.
D) involution.
E) cleavage.
Correct Answer:

Verified
Correct Answer:
Verified
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