Cnidaria features

1. Diploblastic with Mesoglea separating the two layers.
2. Single body cavity, Coelenteron.
3. Nematocysts present in the Cnodoblast cells.
4. Coelenteron  opens to the exterior through a single oral cavity.
5. Polymorphism present. Primary morphs are Polyp and Medusa.
6. Alteration of generation present.

Examples: Aurelia, Obelia, Pennatula

Related posts:

1. Diagnostic features of phylum Porifera
2. Diagnostic features of Protozoans

Tags: Cnidaria features