Flash Cards

Interactions of Living Things

Term Definition
ecology Study of how different organisms interact with one another and their environment
biotic The living parts of the environment
abiotic The non-living parts of the environment
population A group of individuals of the same species in the same area
community All the different populations that live and interact in the area
ecosystem A community and its abiotic environment
biome The part of the earth where life exists
producers (autotroph) organisms that use sunlight directly to make food
photosynthesis process that producers go through to use sunlight to make food
consumer (heterotroph) an organism that eats other organisms
herbivore a consumer that eats only plants
omnivore a consumer that eats both plants and animals
carnivore a consumer that eats only animals
scavenger omnivore that eats dead plants and animals
decomposers organisms that get energy by breaking down dead organisms
competition When 2 or more organisms or populations try to use the same resource, such as sunlight, water, space, food, shelter
predator an organism that kills and eats all or part of an organism
prey an organism that is killed and eaten by another organism
adaptations camouflage, mimicry, defensive chemicals and warning coloration are examples of this
symbiosis a close, long-term association between two or more species where at least one organism benefits.
mutualism a symbiotic relationship in which both organisms benefit
commensalism a symbiotic relationship in which one organism benefits and the other is unaffected
parasitism a symbiotic relationship in which one organism benefits and the other is harmed
parasite The organism that benefits in a parasitic relationship
host The organism that is harmed in a parasitic relationship

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