Question

Write a note on the phylum ‘Cnidaria’.

Answer 1

1. They are aquatic animals that can be either non-motile or free-swimming.
2. They are diploblastic and radially symmetrical with tissue level of organization.
3. They are characterized by nematocysts containing cnidoblasts present on the body and tentacles which are used in the offence, defence, and attachment of the animal.
4. For example, Hydra and jellyfish.