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Std 13

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abiotic
non-living
autotroph
organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
biosphere
part of Earth in which life exists including land, water, and air or atmosphere
biotic
living
carnivore
eats only meat
community
(ecology) a group of interdependent organisms inhabiting the same region and interacting with each other
consumer
organism that relies on other organisms for its energy and food supply; also called a heterotroph
decomposer
an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients
detritivore
organism that feeds on plant and animal remains and other dead matter
ecosystem
collection of all the organisms that live in a particular place, together with their nonliving environment
energy pyramid
a diagram that shows the amount of energy that moves from one feeding level to another in a food web
food chain
series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
food web
a diagram that shows the feeding relationships between organisms in an ecosystem
herbivore
any animal that feeds chiefly on grass and other plants
heterotroph
organism that obtains energy from the foods it consumes; also called a consumer
omnivore
organism that obtains energy by eating both plants and animals
population
a group of organisms of the same species populating a given area
producer
organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
quaternary consumer
a meat-eater that eats tertiary consumers
species
group of similar organisms that can breed and produce fertile offspring
ten percent law
only about 10% of the energy available within 1 trophic level is transferred to the next trophic level.
trophic level
each step in a food chain or food web