Metazoa

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Related to Metazoans: Eumetazoans

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.

Met·a·zo·a

(met'ă-zō'ă),
A subkingdom of the kingdom Animalia, including all multicellular animal organisms in which the cells are differentiated and form tissues; distinguished from the subkingdom Protozoa, or unicellular animal organisms.
[meta- + G. zōon, animal]

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

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

A multicellular animal with a nervous system and tissues. The widely preferred term is “animal”.

Met·a·zo·a

(met'ă-zō'ă)
A subkingdom of the kingdom Animalia, including all multicellular animal organisms in which the cells are differentiated and form tissues; distinguished from the subkingdom Protozoa, or unicellular animal organisms.
[meta- + G. zōon, animal]

metazoa

All the members of the animal kingdom that consist of more than one cell. All animals more complex than the one-celled PROTOZOA.

Metazoa

the division of the animal kingdom that includes the multicellular animals, i.e. all animals except the Protozoa.
References in periodicals archive ?
Observed pathogens were grouped into broad taxonomic categories: Rickettsia-like organisms (RLOs), microsporidia-like organisms (MLO), and metazoan parasites.
Stromatoporoids, corals and bryozoans became the major contributors to metazoan reefs.
Nematodes are mostly microscopic roundworms comprising the most abundant metazoans in the world.
As well as being of paleogeographic significance, the Mount Cap fossils have provided a unique view of early metazoan evolution via their (exceptional) preservation of micro-anatomy, and yield both key data points and an important new paleontological search image.
Washington, Feb 12 (ANI): Austrian researchers, investigating the causes for cancer, have identified the oncogene myc in a fresh water polyp and demonstrated that this oncogene has similar biochemical functions in ancestral metazoan and humans.
Mosquitoes launch a variety of cellular and humoral defence responses against bacteria and other metazoans (30,31).
Epibiosis is a widespread relationship in aquatic environments often involving planktonic microcrustaceans as hosts and a variety of organisms as epibionts, including bacteria, algae, protozoans, or even small metazoans (e.
When we consider, for example, the capacity of some organisms to split apart into separate organisms, fuse together as one organism, engage in lateral gene transfer and any other acts that violate our grasp of the notion of an organism, we are forced to concede that metazoans in general and vertebrates in particular offer little in the way of a central organism concept.
Anaerobic multicellular organisms exist in present day but their evolution in complexity is very limited compared with those achieved by aerobic metazoans.
Though some metazoans, such as helminths, are known to carry two functional copies of the 18S gene with differing sequences (Carranza et al.
We imposed a complex laboratory-climatic gradient on aquatic laboratory microcosms containing bacteria, protists, and small metazoans.
Parasites are classified as protozoans (single-cell parasites) or metazoans (multicell parasites).