Question

specific characters of different phyla​

Answer 1

Primitive phyla without a true coelom include the Porifera and Coelenterata (Cnidaria). Animal phyla are classified according to certain criteria, including the type of coelom, symmetry, body plan, and presence of segmentation.

Answer 2

Answer:

Primitive Phyla without a true coelum include the Porifera and Coelentarata ( Cnidaria ) . Animal phyla are classified according to a certain criteria , including the type of coelum , symmetry , body plan and presence of segmentation .