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What is Symbiosis in Biology? PDF | Download eBooks

Learn Symbiosis definition in biology with explanation to study “What is Symbiosis”. Study symbiosis explanation with biology terms to review biology course for online degree programs.

Symbiosis Definition

  • Symbiosis is an ecological relationship in which two species live in close contact with each other.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Symbiosis Explanation

Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic. The organisms, each termed a symbiont, may be of the same or of different species. Symbiosis can be obligatory, which means that one or both of the symbionts entirely depend on each other for survival, or facultative (optional) when they can generally live independently. More often the species attach to eachother for this relationship.

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