Porifera - an overview

Porifera - an overview porifera Phylum Porifera includes organisms that lack specialized digestive, nervous, and respiratory systems These organisms have a radial symmetry, do porifera Porifera are the most primitive of animals and thus have an early branch on the animal phylogenetic tree, so they're likely candidates for

porifera Porifera Examples Sycon is a Genus found within Class Calcarea These sponges are typically radially symmetrical and appear as tubes They are hermaphroditic

porifera PHYLUM PORIFERA Page 3 Classification of sponges is by  The Porifera are said to contain the greatest variety of sterols found in any invertebrate phylum In most sponges the predominant sterols have a Δ5,7