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For other uses, see Symbiosis.
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Symbiosis is a broad term that describes a long term relationship of biological dependency between two organisms. Symbiotic relationships are classified as mutualistic, communalistic, or parasitic depending on the nature of the interaction between the organisms involved.

MutualismEdit

Joined Trill internal anatomy

A Trill symbiont inside its host.

A mutualistic relationship is one that benefits both organisms involved. The most typical example is that of the Trill. The Trill symbiont enters a Trill humanoid host, and receives nourishment and the ability to travel and learn while the host receives the wisdom and knowledge of all past hosts. A common example is lichens. A lichen is a composite organism that consists of plants (usually algae) living within fungi.

ExamplesEdit

CommenalismEdit

A communalistic relationship is one in which one organism is benefited while the other is neither harmed nor benefited. This is typically exhibited by one organism using another as transportation or shelter, or an organism making use of the remains of another dead organism.

ExamplesEdit

ParasitismEdit

A parasitic relationship is one in which one organism benefits while harming or killing the other.

ExamplesEdit

External Links Edit

Symbiosis article at Memory Alpha, the wiki for canon Star Trek.

Symbiosis article at Wikipedia, the free encyclopedia.

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