Symbiosis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term symbiosis (from the Greek: ¿¿¿ syn "with"; and ß¿¿¿¿¿ biosis "living") commonly describes close and often long-term interactions between different biological species. The term was first used in 1879 by the German mycologist Heinrich Anton de Bary, who defined it as "the living together of unlike organisms." The definition of symbiosis is in flux, and the term has been applied to a wide range of biological interactions. The symbiotic relationship may be categorized as mutualistic, commensal, or parasitic in nature. Others define it more narrowly, as only those relationships from which both organisms benefit, in which case it would be synonymous with mutualism.