Protist
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| - | '''Slime mold'''[http://commons.wikimedia.org/wiki/File:Haeckel_Mycetozoa.jpg] or '''mould''' is a broad term describing [[protist]]s that use spores to reproduce. Slime molds were formerly classified as [[fungi]], but are no longer considered part of this [[kingdom (biology)|kingdom]]. | + | '''Protists''' ({{IPAc-en|icon|ˈ|p|r|oʊ|t|ɨ|s|t}}) are a diverse group of [[eukaryote|eukaryotic]] [[microorganism]]s. Historically, protists were treated as the [[kingdom (biology)|kingdom]] '''Protista''', which includes mostly [[Unicellular organism|unicellular]] [[organism]]s that do not fit into the other kingdoms, but this group is contested in modern [[taxonomy]]. |
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| - | Their common name refers to part of some of these organisms' life cycles where they can appear as gelatinous "slime". This is mostly seen with the [[myxomycetes]], which are the only macroscopic slime molds. | + | |
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| - | Found in a wide variety of colours, more than 900 species of slime mold occur all over the world and feed on microorganisms that live in any type of dead plant material. They contribute to the decomposition of dead vegetation, and feed on bacteria, yeasts, and fungi. For this reason, these organisms are usually found in [[soil]], [[lawn]]s, and on the [[forest floor]], commonly on [[deciduous]] logs. However, in [[tropics|tropical areas]] they are also common on [[inflorescences]], [[fruit]]s and in aerial situations (e.g., in the canopy of trees). In urban areas, they are found on [[mulch]] or even in the [[leaf mold]] in [[gutter]]s, and also grow in air conditioners, especially when the drain is blocked. One of the most commonly encountered slime molds is the yellow ''[[Physarum polycephalum]]'', found both in nature in [[forest]]s in [[temperate zone]]s, as well as in [[classroom]]s and [[laboratory|laboratories]]. | + | |
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| - | Most slime molds are smaller than a few centimeters, but some species may reach sizes of up to several square meters and masses of up to 30 grams. | + | |
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| - | When food is abundant a slime mold exists as a single-celled organism, but when food is in short supply, slime molds congregate and start moving as a single body. In this state they are sensitive to airborne chemicals and can detect food sources. They can readily change the shape and function of parts and may form stalks that produce fruiting bodies, releasing countless spores, light enough to be carried on the wind or hitching a ride on passing animals. | + | |
| ==See also== | ==See also== | ||
| - | *[[Dictyostelium]] | + | * [[Protistology]] |
| - | *[[Mycetozoa]] | + | |
| - | *[[Sorocarp]] | + | |
| - | *[[Swarming motility]] | + | |
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Protists (Template:IPAc-en) are a diverse group of eukaryotic microorganisms. Historically, protists were treated as the kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms, but this group is contested in modern taxonomy.
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