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Characteristics of Porifera:-; 1)No definite symmetry. 2)Body multicellular, few tissues, ... 5)Reproduce sexually or asexually, sexual reproduction can be either gonochoristic or hermaphroditic. 6)Has no nervous system. 7)Has a distinct larval stage which is planktonic. 8)Lives in aquatic environments, mostly marine.
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www.earthlife.net/inverts/porifera.html
www.earthlife.net/inverts/porifera.html
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6)Has a nervous system with pharyngeal nerve ring. 7)Has no circulatory system (no blood system) ; 8)Reproduction normally sexual and gonochoristic. 9)Feed on just about everything. 10)Live just about everywhere, many species are endoparasites.
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www.earthlife.net/inverts/nematoda.html
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Unit 3: Phylum Porifera and Phylum Cnidaria (Sponges and Radiates) ... 2. Describe the tissues, organs, nerves, coordination, digestive system and general activity of sponges to support the statement that sponges are metazoa of the cellular grade of construction. ... 21. Compare the nervous systems of Hydra and Scypha.;
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www.wncc.net/courses/dnash/zoology/porifcoel.htm
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SPONGES (PORIFERA) ... Phylum Porifera ... No organized system, though archeocytes act as food transport...
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faculty.vassar.edu/mehaffey/academic/animalstructure/ou...
faculty.vassar.edu/mehaffey/academic/animalstructure/outlines/porifera.html
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Sponge - Wikipedia, the free encyclopedia
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Sponges are animals of the phylum Porifera (pronounced /pɒˈrɪfərə/ ). Their bodies consist of jelly-like mesohyl sandwiched between two thin layers of cells. While all animals have unspeciali...
en.wikipedia.org/wiki/Sponge
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The ectoderm forms from the outer layer of cells. It gives rise to the skin and nervous system. ... A nervous system receives information from sensory receptors and it is responsible for stimulating the muscles and glands. Muscle movement requires stimulation by the nervous system.
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faculty.clintoncc.suny.edu/faculty/michael.gregory/file...
faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/animal%20diversity/lower%20invertebrates/sponges.htm
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Zoology or Animal Biology question: What is the nervous system of phylum porifera? It doesn't have one. ... How is the nervous system of a porifera? What do porifera use as a sensory system? What type of gas system do porifera have? Does a phylum porifera have a nervous system? What kind of nervous system do porifera have?
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wiki.answers.com/Q/What_is_the_nervous_system_of_phylum...
wiki.answers.com/Q/What_is_the_nervous_system_of_phylum_porifera
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Phylum Porifera ... 2. Water canal system ... No gut tract or nervous system...
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zoology.muohio.edu/crist/Zoo312/Porifera.html
zoology.muohio.edu/crist/Zoo312/Porifera.html
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Sponges: The Phylum Porifera | Tissues: Jellyfish, Corals and Sea Anemones ... skin, brain, and nervous system ... lack of a well-developed nervous and gastrovascular system (the live in a fairly stable environment and the host has already digested their food)
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www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookDiver...
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookDiversity_7.html
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