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The Phylum Porifera contains the sponges. There are approximately 6000 sponges. Most live attached to marine reefs. Approximately 100 species live in freshwater. They lack true tissue and organs and therefore the cells are relatively unspecialised. ... Habitat: Reef, sand, muddy bottom; 2 - 15 m depth...
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www.woodbridge.tased.edu.au/mdc/Species%20Register/phyl...
www.woodbridge.tased.edu.au/mdc/Species%20Register/phylum_porifera.htm
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Sponges: Porifera - Freshwater Sponge (spongilla Lacustris): Species Accounts ... Placozoans: Placozoa - Physical Characteristics, Behavior And Reproduction - GEOGRAPHIC RANGE, HABITAT, DIET, PLACOZOANS AND PEOPLE, CONSERVATION STATUS [next] [back] Jellyfishes Getting to Know Corals Sponges and Other Simple Animals...
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animals.jrank.org/pages/1454/Sponges-Porifera.html
animals.jrank.org/pages/1454/Sponges-Porifera.html
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Since certain porifera inhabit certain areas, different types of habitats and locations need to be discussed. In each area, porifera interact within the environment and with its other organisms to complement and enhance natural processes.
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library.thinkquest.org/26502/level2/Habitat/index-habit...
library.thinkquest.org/26502/level2/Habitat/index-habitat.htm
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Scientific Observation and Analysis of the Sponges (Porifera) ... (6) Collins, Allen G. Porifera: Life History and Ecology (UCMP Berkeley) ... Porifera Branch Page...
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tolweb.org/treehouses/?treehouse_id=3315
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Phylum Porifera description, structure, reproduction, body type, habitat ... You will also learn about the structure of a sponge, with the help of a diagram, the habitat of sponges, and their importance to the ecosystem. You will discover some interesting adaptations to the environment that sponges have.
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tolweb.org/treehouses/?treehouse_id=3431
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Am. Midi. Nat. 146:243-253. The Distribution and Habitat Preferences of Freshwater. Sponges (Porifera) in Four Southern Lake Michigan Harbors ...
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www.jstor.org/stable/3082905
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Phylum Porifera (Sponges) - Sponge The simplest multicellular animals. The cells are loosely held together and do not form tissues. Aquatic in habitat (mostly marine). Ostia (pores) are present all over the body, with a single large opening on top called osculum. ... phylum porifera habitat...
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www.tutorvista.com/search/phylum-porifera-germ-layers
www.tutorvista.com/search/phylum-porifera-germ-layers
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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 something as an adult).
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www.earthlife.net/inverts/porifera.html
www.earthlife.net/inverts/porifera.html
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Such an ancestor might be similar to ciliated 'planula' larva found in cnidarians (and some porifera and one ctenophore) and to acoel flatworms ... No recorded extinctions, but threatened particularly by sedimentation (why?) and destruction of their habitat.
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science.kennesaw.edu/~jdirnber/InvertZoo/LecPorifera/Po...
science.kennesaw.edu/~jdirnber/InvertZoo/LecPorifera/Porif.html
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