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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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They feed through pores on their outer walls. ... Porifera are unidirectional driven by flagella. ... Porifera are also known as Sponges.
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students.ncwc.edu/bio101/invertebrates/characteristics_...
students.ncwc.edu/bio101/invertebrates/characteristics_of_porifera.htm
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All Cnidaria are armed with stinging cells called nematocysts. ... There are four major groups of Cnidaria: Anthozoa, Cubozoa, Hydrozoa, and Scyphozoa. ... They have radial symmetry.
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students.ncwc.edu/bio101/invertebrates/characteristics_...
students.ncwc.edu/bio101/invertebrates/characteristics_of_cnidaria.htm
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•Outer and inner cell layers lack a basement membrane; •Outer and inner cell layers divided by a noncellularlayer –the mesohyl–that contains some cells and skeletal material; •Body support (“skeleton”) provided by spiculescomposed of calcium carbonate or silicon ... Choanocytes feeding reproduction...
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course1.winona.edu/mdelong/Invertebrate/Porifera.pdf
course1.winona.edu/mdelong/Invertebrate/Porifera.pdf
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See appended and detailed sponge chapter if this is new to you ... Sponges Most are typically hermaphroditic (both male and female) and form their gametes from choanocytes (sperm) and archeocytes (eggs). During spawning, sperm enter the excurrent canals and are ejected into ... The fertilized eggs are typically larviparous,
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www.fiu.edu/~goldberg/coralreefs/NewPorifera.htm
www.fiu.edu/~goldberg/coralreefs/NewPorifera.htm
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General Characteristics of Phylum Porifera ... An example is the sponge ... It's common name is the " pore-bearing " animal.
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www.cbv.ns.ca/mchs/diversity/GenCharPorifera.htm
www.cbv.ns.ca/mchs/diversity/GenCharPorifera.htm
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After reviewing this section, the student should be able to discuss the physiological characteristics of sponges and describe their reproduction. ... Porifera are commonly referred to as sponges. An early evolutionary branching event in the history of animals may have separated the sponges from other metazoans,
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www.infusion.allconet.org/webquest/PhylumPorifera.html
www.infusion.allconet.org/webquest/PhylumPorifera.html
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Change Player Size ... Watch this video in a new window ... After students work in small groups to brainstorm adaptations which would be favorable for a sponge in its aquatic habitat the students are given notes covering the range of characters actually seen.
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www.youtube.com/watch?v=YCzAmdQUH0Q
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At one time, a diagnostic feature of the Porifera was the presence of spicules. As a result, However, with the living material in hand, histological, cytological, and larval characteristics can be observed. This information suggests that these 15 species can readily be placed within the Calcarea and the Demospongia.
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www.ucmp.berkeley.edu/porifera/poriferasy.html
www.ucmp.berkeley.edu/porifera/poriferasy.html
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