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Classification:; Kingdom - Animal; Phylum - Porifera; Classes - Calcarea, Hexactinellida, Sclerospongiae, etc. ... Feeding:Porifera are filter feeders. On the outside of its body, a sponge has small pores called ostia. Water flows in through the ostia of the sponge because flagella (parts on...
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www.fcps.edu/westspringfieldhs/academic/science/bjewell...
www.fcps.edu/westspringfieldhs/academic/science/bjewell/ocean/hamil/final/por.shtml
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Porifera (pōrif'uru) [key][Lat.,=pore bearer], animal phylum consisting of the organisms commonly called sponges. It is the only phylum of the animal ... All adult sponges are sessile (nonmotile), and nearly all are marine; there are four families of freshwater sponges. Sponges are subdivided into three classes...
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www.factmonster.com/ce6/sci/A0839737.html
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Most sponges belong in this class. It includes sponges with a skeleton made up of silicon-containing spicules or spongin fibers or both. In the latter case, the spongin provides a matrix in which the spicules are embedded. ... The Demospongiae vary in size from small, The fibrous sponges also belong to this class;
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www.infoplease.com/ce6/sci/A0860483.html
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THEY HAVE/ARE THEY DON'T HAVE ... Body with cells arranged around pores, canals and chambers for the passage of water. An organ system. ... There are four Classes of sponges.
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www.bumblebee.org/invertebrates/Porifera.htm
www.bumblebee.org/invertebrates/Porifera.htm
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Sponges (phylum Porifera) are an exclusively aquatic and, with a few exceptions (Vacelet and Boury-Esnault ... Although the presence of three distinct groups among the extant sponges (classes Hexactinellida, Calcarea, and Demospongiae) is largely unchallenged, the evolutionary relationships among them are controversial.
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tolweb.org/tree?group=Porifera&contgroup=Animals
tolweb.org/tree?group=Porifera&contgroup=Animals
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ZOO 137 - Invertebrate Zoology Phylum Info File -- Porifera ... There are other classes of sponges, but this is by far the largest. ... Things You Should Do Before Coming to the Lab on Porifera...
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www.csupomona.edu/~jomleong/classes/Zoo137/labparta/por...
www.csupomona.edu/~jomleong/classes/Zoo137/labparta/porifera.html
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At one time, a diagnostic feature of the Porifera was the presence of spicules. ... The abundant fossil chaetetids, stromatoporoids, and sphinctozoans are probably part of the classes Demospongia and Calcarea, though some uncertainty still remains. The Archaeocyatha pose a special case. No living representative of this group...
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www.ucmp.berkeley.edu/porifera/poriferasy.html
www.ucmp.berkeley.edu/porifera/poriferasy.html
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Classes of the Phylum Porifera: Calcarea ; Demospongiae ; Sclerospongiae ; Hyalospongia (or Hexactinellida ) ; REFERENCES; Barnes, 1980; Brusca & Brusca, 1990; Barnes, Calow, and Olive, 1993 ; Meglitsch & Schram, 1991;
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An introduction to the biology, classification and ecology of sponges, the phylum Porifera ... Characteristics of Porifera:-; 1)No definite symmetry. 2)Body multicellular, few tissues, no organs. 3)Cells and tissues surround a water filled space but there is no true body cavity. 4)All are sessile, (live attached to...
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www.earthlife.net/inverts/porifera.html
www.earthlife.net/inverts/porifera.html
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