Write doen four general characters of Porifera. Give two examples.

Characters of Porifera:

(i) These are primitive multicellular animals and have cellular level of organisation.

(ii) These are non-motile animals attached to some solid support.

(iii) They have a canal system that helps in circulating water throughout the body to bring in food and oxygen.

(iv) They are commonly called sponges, and are mainly found in marine habitats.

Examples- Sycon and Spongilla.