An organism that depends for its nourishment on organic matter already produced by other organisms. All animals and fungi are heterotrophs. Parasitic plants and many bacteria also exhibit heterotrophism.
An organism that obtains preformed organic compounds from its environment. It is unable to synthesize organic material. All animals, fungi, many bacteria, and a few insectivorous flowering plants are heterotrophs.
An organism that requires one or more organic compounds for growth, and is considered the same as chemoorganotroph; a system of nutrition that requires preformed organic molecules as a source of energy. (contrast - autotroph).
An organism dependent on obtaining organic food from the environment because it is unable to synthesize organic material. They (animals, fungi, many bacteria, and a few flowering plants) obtain almost all their organic material either directly or indirectly from the activity of autotrophs
An organism that is unable to synthesize organic compounds (and thus its energy) from the environment and therefore fulfils its energy requirements by feeding on other organisms or organic matter. Compare autotroph.
any organism that derives energy from the oxidation of organic compounds and most or all of its carbon from the assimilation of pre-formed and ingested/absorbed organic compounds; see also chemoorganotroph.
A heterotroph (Greek heterone = (an)other and trophe = nutrition) is an organism that requires organic substrates to get its carbon for growth and development. A heterotroph is known as a consumer in the food chain. Contrast with autotrophs which use inorganic carbon dioxide or bicarbonate as sole carbon source.