Multicellular Organism

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A Multicellular Organism is an organism that consist of more than one attached 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 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.[2][3]

  1. Becker et al, Wayne M. (2009). The world of the cell. Pearson Benjamin Cummings. p. 480. ISBN 978-0-321-55418-5. 
  2. Brian Keith Hall, Benedikt Hallgrímsson, Monroe W. Strickberger (2008). Strickberger's evolution: the integration of genes, organisms and populations (4th ed.). Hall/Hallgrímsson. p. 149. ISBN 978-0-7637-0066-9. 
  3. Adl, Sina, M; Simpson, Alastair G. B.; Farmer, Mark A.; Andersen, Robert A.; Anderson, O. Roger; Barta, John R.; Bowser, Samuel S.; Brugerolle,Guy; Fensome, Robert A.; Fredericq,Suzanne; James, Timothy Y.; Karpov, Sergei; Kugrens, Paul; Krug, John; Lane, Christopher E.; Lewis,Louise A.; Lodge,Jean; Lynn, Denis H.; Mann,David G.; Mccourt,Richard M.; Mendoza,Leonel; Moestrup,Øjvind; Mozley-Standridge,Sharon E.; Nerad,Thomas A.; Shearer, Carol A.; Smirnov,Alexey V.; Spiegel, Frederick W.;Taylor, Max F.J.R. (October 2005). "The New Higher Level Classification of Eukaryotes with Emphasis on the Taxonomy of Protists". J. Eukaryot. Microbiol. 52. doi:10.1111/j.1550-7408.2005.00053.x/abstract. Retrieved 19 March 2013.