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Chapter 18

Section 3

QuestionAnswer
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 producer
the production of carbohydrates through the use of energy from inorganic molecules instead of light chemosynthesis
the rate at which organic matter is assimilated by plants and other producers during a period of time over a certain area gross primary productivity
any organic material that has been produced in an ecosystem biomass
the rate at which biomass accumulates in an ecosystem net primary productivity
an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources consumer
an organism that eats only plants herbivore
an organism that eats animals carnivore
an organism that eats a variety of other organisms, including animals and plants omnivore
a consumer that feeds on dead organisms or on the parts or wastes of other organisms detrivore
an organism that feeds by breaking down organic matter from dead organisms; examples include bacteria and fungi decomposer
an organism's relative position in a sequence of energy transfers in a food chain or food pyramid, examples include producers and primary, secondary, and tertiary consumers trophic level
the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms food chain
a diagram that shows the feeding relationships among organisms in an ecosystem food web
Created by: fasolak16
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