Definition for Difference between revisions of "Parazoa"
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(Created page with "A subgroup of animals that are not generally thought to possess specialized tissue types or organs, although they may have several distinct types of cells; the one phylum in this...") |
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Latest revision as of 22:47, 3 February 2011
A subgroup of animals that are not generally thought to possess specialized tissue types or organs, although they may have several distinct types of cells; the one phylum in this group is the Porifera (sponges).