Archenteron

Blastocoele

Blastopore

Stomodeum

Blastula

Morula

Blastomere

Deuterostome

The diagrams A, C, and E represent embryos, while diagrams B, D, and F are longitudinal sections taken from A, C, and E. Mark the points 1, 2, and 3 on diagram A.

• To which zoological group do these embryos belong?

• Identify the different stages of development of these embryos.

• Mark the position of the vital dyes on C, E, B, D, and F

Identify the zoological groups to which these blastulas correspond, and then indicate the blastocoele