6 terms

Biology Ch. 13.3 - Energy in Ecosystems

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Producers
Organisms that get their energy from nonliving resources. (They make their own food)
Autotrophs
Another name for producers. Auto (self) troph (nourishment)
Consumers
Consumers that get their energy by eating other living or once-living resources. (Plants, animals)
Heterotrophs
Another name for consumers. Hetero (different) troph (nourishment)
Photosynthesis
Green plants, Cyanobacteria, and some Protists use this to produce energy. First stage- energy from sunlight is converted to chemical reaction. Second stage- chemical energy is used to change carbon dioxide into carbohydrates as an energy source.
Chemosynthesis
The process by which an organism forms carbohydrates using chemicals rather then light as an energy source. Discovered in 1977