Question

T. S of Blastula of Frog.

Answer 1

At the end of cleavage a mass of cell is formed known as blastula and is an sphere and has cavity known as blastocoel. ... In the frog's egg , the blastocoel is small and not apparent until about the 32-cell stage which is blastula. The cavity at this stage is large and filled with an albuminous fluid.