The First Cavity Formed During Sea Urchin Development is The

Question

The first cavity formed during sea urchin development is the
A) blastopore.
B) mouth.
C) blastocoel.
D) anus.

Accepted Answer

The first cavity formed during sea urchin development is the blastocoel, which is a fluid-filled cavity that forms inside the early embryo, specifically within the blastula stage.