what is the name that is given to a symbiotic relationship
commensalism mutualism parasitism
title: Symbiosis text: symbionts entirely depend on each other for survival, or facultative (optional) when they can generally live independently. Symbiosis is also classified by physical attachment; symbiosis in which the organisms have bodily union is called conjunctive symbiosis, and symbiosis in which they are not in union is called disjunctive symbiosis. When one organism lives on the surface of another, such as head lice on humans, it is called ectosymbiosis; when one partner lives inside the tissues of another, such as "Symbiodinium" within coral, it is termed endosymbiosis. The definition of "symbiosis" was a matter of debate for 130 years. In 1877, title: Symbiotic bacteria text: Symbiotic bacteria Symbiotic bacteria are bacteria living in symbiosis with another organism or each other. For example, Zoamastogopera, found in the stomach of termites, enable them to digest cellulose. Symbiosis was first defined by Anton de Bary in 1869 in a work entitled "Die Erscheinung der Symbiose" in which he defined the term as "namely, the living together of parasite and host". Associated with the term "symbiosis" are terms: mutualism, commensalism, parasitism, and amensalism. This may define or limit the type of "living together" of two organisms, be they plant, animal, protist or bacteria they practice. Some types of cyanobacteria title: Symbiosis text: Symbiosis Symbiosis (from Greek συμβίωσις "living together", from σύν "together" and βίωσις "living") 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. In 1879, Heinrich Anton de Bary defined it as "the living together of unlike organisms". The term was subject to a century-long debate about whether it should specifically denote mutualism, as in lichens; biologists have now abandoned that restriction. Symbiosis can be obligatory, which means that one or both of the title: Symbiosis text: lives on the body surface of the host, including the inner surface of the digestive tract or the ducts of exocrine glands. Examples of this include ectoparasites such as lice; commensal ectosymbionts such as the barnacles, which attach themselves to the jaw of baleen whales; and mutualist ectosymbionts such as cleaner fish. Competition can be defined as an interaction between organisms or species, in which the fitness of one is lowered by the presence of another. Limited supply of at least one resource (such as food, water, and territory) used by both usually facilitates this type of interaction, although the title: Symbiosis text: symbiosis is an association between individuals of two species, where one (the cleaner) removes and eats parasites and other materials from the surface of the other (the client). It is putatively mutually beneficial, but biologists have long debated whether it is mutual selfishness, or simply exploitative. Cleaning symbiosis is well-known among marine fish, where some small species of cleaner fish, notably wrasses but also species in other genera, are specialised to feed almost exclusively by cleaning larger fish and other marine animals. Symbiosis is increasingly recognized as an important selective force behind evolution; many species have a long history of