Science Fair Project Encyclopedia
Pseudocoelomate
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A pseudocoelomate is an animal like a roundworm or rotifer. These animals have a body cavity, but it is not completely lined with a mesoderm. The mesoderm is the middle layer of tissue and cells which composes body structures into muscles and systems. The lack of this structure causes pseudocoelomates to be classified separately from other animals classified as coelomates.
Modern molecular phylogenies have brought into question whether coelomates and pseudocoelomates are actually independent lineages.
Source:
- Biology Sixth Edition by Solomon, Berg and Martin ISBN 0-534-39175-3
12-19-2008 14:25:18
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details