Producers, sometimes called primary producers, are organisms that make their own food. Because these organisms change relatively simple inorganic nutrients into more complex, energy-rich, organic forms, they are autotrophs. Thus, they do not need any...

Autotrophs are organisms that are capable of making their own food. They are "self feeders." These organisms make their own food by converting relatively simple inorganic nutrients into more complex, energy-rich, organic forms. Thus, the autotrophs do...

An autotroph is an organism able to make its own food. Autotrophic organisms take inorganic substances into their bodies and transform them into organic nourishment. Autotrophs are essential to all life because they are the primary producers at the...

An organism that derives its carbon for building body tissues from carbon dioxide (CO2) or carbonates and obtains its energy for bodily functions from radiant sources, such as sunlight, or from the oxidation of certain inorganic substances. The leaves...

Self nourishing. That component of an ecosystem in which light energy fixation, use of simple inorganic substances and buildup of complex substances predominate, see...

An autotroph (from the Greek autos = self and trophe = nutrition) is an organism that produces complex organic compounds from simple inorganic molecules and an external source of energy, such as light or chemical reactions of inorganic compounds....