Question

7. Give two differences between blastula
and gastrula.​

Answer 1

Answer:

blastula is the first stage of embryo.where as gastrula is Gastrula, early multicellular embryo, composed of two or more germinal layers of cells from which the various organs later derive.

Answer 2

Answer:

After the cleavage has produced over 100 cells, the embryo is called a blastula. The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel).

Gastrulation is the process during embryonic development that changes the embryo from a blastula with a single layer of cells to a gastrula containing multiple layers of cells. Gastrulation typically involves the blastula folding in upon itself or dividing, which creates two layers of cells.