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metazoa

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Metazoa /Meta·zoa/ (met″ah-zo´ah) that division of the animal kingdom embracing the multicellular animals whose cells differentiate to form tissues, i.e., all animals except the Protozoa.metazo´almetazo´an
Met·a·zo·a (mt-z)
n.
A subdivision of the animal kingdom that includes all multicellular animal organisms having cells that are differentiated and form tissues and organs.

meta·zoan adj. & n.

metazoa
[-zō′ə]
Etymology: Gk, meta + zoon, animal
a classification that includes animals that have tissues and organs. All animals except sponges are metazoa.

Metazoa [met″ah-zo´ah]
the division of the animal kingdom that includes the multicellular animals, i.e., all animals except the Protozoa. adj., adj metazo´al, metazo´an.

Metazoa
the division of the animal kingdom that includes the multicellular animals, i.e. all animals except the Protozoa.


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Metazoa are by definition mobile at some stage of their life cycle and ingest other organisms for sustenance.
ANIMALIA 1,320,000 MESOZOA METAZOA 1,320,000 Porifera (sponges) 10,000 Cnidaria (hydras, jellyfish, corals, etc) 10,000 Platyhelminthes (flatworms) 20,000 Nematoda (roundworms) 25,000 Echinodermata (sea uchins, etc.
 
 
 
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