Question

Blastopore of frog embryo is equivalent to

Answer 1

Answer:

During gastrulation, the animal cap and noninvoluting marginal zone (NIMZ) cells expand by epiboly to cover the entire embryo. The dorsal portion of the NIMZ extends more rapidly toward the blastopore than the ventral portion, thus causing the blastopore lips to move toward the ventral side.

Answer 2

Answer:

Blastopore of frog embryo is equivalent to the primitive streak in chick.