Porifera: Phylum Porifera are the

Phylum Porifera are the lowest multicellular animals belonging to the kingdom Animalia. The word “ Porifera ” mainly refers to the pore bearers or pore bearing species. Learn about sponges, the primitive animals with porous bodies and water canal systems. Find out their general features, modes of reproduction, classification and examples of sponges. Phylum Porifera is placed in the kingdom Animalia and regarded as the oldest animal group. The term Porifera merely refers to pore bearers that include Poriferans or pore bearing animals. Poriferans or sponges possess small pores on their entire body and some wide openings. The members of Phylum Porifera are metazoans that show a cellular organization, i.e. lack tissues and organs. An asymmetrical body is the characteristic feature of all sponges. There are approximately 5000 species in the ... Phylum Porifera refers to a group of simple, sessile aquatic animals commonly known as sponges . Sponges lack true tissues and organs and have a porous body structure with numerous channels and chambers that allow water to flow through them.