Question

In whuch stage of develooment the embryonic cells form the germinal layers by the movement

Answer 1

Gastrula, early multicellular embryo, composed of two or more germinal layers of cells from which the various organs later derive.

The gastrula develops from the hollow, single-layered ball of cells called a blastula which itself is the product of the repeated cell division, or cleavage, of a fertilized egg.