Multicellular organism From Wikipedia, the free encyclopedia In this image, a wild-type Caenorhabditis elegans is stained to highlight the nuclei of its cells. Multicellular organisms are organisms that consist of more than one cell, in contrast to single-celled organisms. To form a multicellular organism, these cells need to identify and attach to the other cells.[1] Only a dozen or so unicellular species have cells that can be seen individually with the naked eye. The rest of the nearly two million[citation needed] visible species are multicellular. In particular all species of animals, land plants and filamentous fungi are multicellular, as are many algae. Some organisms are partially uni- and multicellular, like Dictyostelium. Multicellular organisms —like plants, animals and brown algae— arise from a single cell and generate a multi-celled organism. Pluricellular organisms are the result of many-celled individuals joining together through colony formation, filament formation or aggregation. Pluricellularity has evolved independently in Volvox and some flagellated green algae
Posted on: Wed, 14 Aug 2013 08:24:21 +0000
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