Phylum-Porifera

                            

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       This phylum includes “Pore bearing animals”.

Animals are aquatic , irregular, asymmetrical and mostly sessile.
Body bears “Pores” on body .Opening of pore is called “Ostium”.

Canal system is found in body Canal system is lined with “Collar cells” these generates water current .This water current is helpful in feeding, respiration and other vital activities.     Most animals are bisexual .Vegetative reproduction is seen in animals.

Ex- Sycon ,Spongilla ,etc .