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18.3 Terms
Terms
| Term | Definition |
|---|---|
| biomass | Organic matter that has been produced in an ecosystem |
| carnivore | an organism that eats animals |
| chemosynthesis | the production of carbohydrates through the use of energy from inorganic molecules instead of light |
| consumer | an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from other organic sources |
| decomposer | an organism that feeds by breaking down organic matter from dead organisms, examples include bacteria and fungi |
| detritivore | a consumer that feeds on dead organisms or on the parts or wastes of other organisms |
| food chain | the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms |
| food web | a diagram that shows the feeding relationships among organisms in an ecosystem |
| gross primary productivity | Rate at which producers in an ecosystem capture energy from the sunlight |
| herbivore | an organism that eats only plants |
| net primary productivity | the rate at which biomass accumulates in an ecosystem |
| omnivore | an organism that eats a variety of other organisms, including animals and plants |
| producer | an organism that can make organic molecules from inorganic molecules, a photosynthetic or chemosynthetic autotroph that serves as the basic food source in an ecosystem |
| trophic level | an organisms relative position in a sequence of energy transfers in a food web or food pyramid, examples include producers and primary, secondary, and tertiary consumers |
Created by:
faithpreston
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