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Definition. Diagram of the six possible types of symbiotic relationship, from mutual benefit to mutual harm. The definition of symbiosis was a matter of debate for 130 years. [7] In 1877, Albert Bernhard Frank used the term symbiosis to describe the mutualistic relationship in lichens.
Symbiosis. Symbiosis refers to two or more biological species that interact closely, often over a long period of time. Symbiosis includes three types of interactions—mutualism, commensalism, and parasitism—of which only mutualism can sometimes qualify as cooperation. Mutualism involves a close, mutually beneficial interaction between two ...
Ectosymbiosis is a form of symbiotic behavior in which an organism lives on the body surface of another organism (the host ), including internal surfaces such as the lining of the digestive tube and the ducts of glands. The ectosymbiotic species, or ectosymbiont, is generally an immobile (or sessile) organism existing off of biotic substrate ...
Cultural landscape is a term used in the fields of geography, ecology, and heritage studies, to describe a symbiosis of human activity and environment. As defined by the World Heritage Committee , it is the "cultural properties [that] represent the combined works of nature and of man" and falls into three main categories: [1]
Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations.
Competition (biology) Competition is an interaction between organisms or species in which both require a resource that is in limited supply (such as food, water, or territory ). [1] Competition lowers the fitness of both organisms involved since the presence of one of the organisms always reduces the amount of the resource available to the other.
Hermeneutics ( / hɜːrməˈnjuːtɪks /) [1] is the theory and methodology of interpretation, [2] [3] especially the interpretation of biblical texts, wisdom literature, and philosophical texts. [4] [5] As necessary, hermeneutics may include the art of understanding and communication. [6]
A symbiosome is a specialised compartment in a host cell that houses an endosymbiont in a symbiotic relationship. [1] The term was first used in 1983 to describe the vacuole structure in the symbiosis between the animal host the Hydra, and the endosymbiont Chlorella. Symbiosomes are also seen in other cnidaria - dinoflagellate symbioses ...