ECOLOGY TEST STUDY GUIDE
commensalism - Answers - a relationship between two organisms in which one
organism benefits and the other is unaffected
mutualism - Answers - when both species benefit none are hamrmed
symbiosis - Answers - when two different life forms coexist (good or bad relationship)
parasitism - Answers - one organism benefits and the other is harmed
decomposer - Answers - organism that obtains energy from waste and dead animals
carrying capacity - Answers - largest number of individuals in a population that an
environment can support
producer - Answers - an organism that makes its own food (extra defintion)
consumer - Answers - organisms that obtain food by eating other organisms (extra
defintion)
herbivore - Answers - eats only plants
omnivore - Answers - an animal that feeds on both animal and vegetable substances
carnivore - Answers - eats only meat
ecosystem - Answers - all the living and nonliving factors in an area
community - Answers - the populations of different species within an area
food chain - Answers - a series of steps in which organisms transfer energy by eating
and being eaten
food web - Answers - a community of organisms where there are several interrelated
food chains and show the relationships between organisms in an ecosystem
biosphere - Answers - part of Earth in which life exists including land, water, and air or
atmosphere
population - Answers - a group of organisms of the same species populating a given
area
energy pyramid - Answers - a diagram that shows the amount of energy that moves
from one feeding level to another in a food web
commensalism - Answers - a relationship between two organisms in which one
organism benefits and the other is unaffected
mutualism - Answers - when both species benefit none are hamrmed
symbiosis - Answers - when two different life forms coexist (good or bad relationship)
parasitism - Answers - one organism benefits and the other is harmed
decomposer - Answers - organism that obtains energy from waste and dead animals
carrying capacity - Answers - largest number of individuals in a population that an
environment can support
producer - Answers - an organism that makes its own food (extra defintion)
consumer - Answers - organisms that obtain food by eating other organisms (extra
defintion)
herbivore - Answers - eats only plants
omnivore - Answers - an animal that feeds on both animal and vegetable substances
carnivore - Answers - eats only meat
ecosystem - Answers - all the living and nonliving factors in an area
community - Answers - the populations of different species within an area
food chain - Answers - a series of steps in which organisms transfer energy by eating
and being eaten
food web - Answers - a community of organisms where there are several interrelated
food chains and show the relationships between organisms in an ecosystem
biosphere - Answers - part of Earth in which life exists including land, water, and air or
atmosphere
population - Answers - a group of organisms of the same species populating a given
area
energy pyramid - Answers - a diagram that shows the amount of energy that moves
from one feeding level to another in a food web
