Phylum - Coelenterata

Phylum-Porifera|| Phylum-Coelentrata

Discussion Class -2 (Pylum Coelenterata || Ctenophora || Platyhelminthes || Aschelminthes || Annelida || Arthropoda

Why is coelenterata also called Cnidaria?

The class of Coelenterata which shows polymorphism is :

Discuss the general characters of the phylum Porifera or Coelenterata.

Porifera || Coelenterata