Write down four general characters of cnidarians (coelenterates). Give two examples.

Characters of Cnidarians:

(i) They are aquatic, mostly marine, sessile or free-swimming, radially symmetrical animals.

(ii) Cnidarians exhibit tissue level of organisation and are diploblastic.

(iii) Cnidarians exhibit two basic body forms called polyp and medusa.

(iv) Tentacles are found around the mouth.

Examples- Hydra and Aurelia.