8. PHYLUM PORIFERA
īļ Word meaning : Organisms with pores
īļ Commonly known as Sponges
īļ Marine Organisms
īļ Non-motile animals â attached to a support
īļ Possess a large cavity inside their body â
spongocoel
īļ Pores + Spongocoel
īļ Waste material
īļ Outer surface is hard ( skeleton )
Water canal system
Osculum
Calcium
and Silicon
11. PHYLUM COELENTERATA ( CNIDARIA )
īļ Aquatic animals
īļ Outer surface is hard â Exoskeleton
īļ There is a cavity in the body
īļ Body is made up of two layers of cells:
īŧ One makes up cells on the outside of
the body,
īŧOne makes the inner lining of the body
īļ Some lives in colony , some have
solitary life