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Ecosystems

Vocabulary for 5th grade ecosystem unit

TermDefinition
population a group of one kind of organism living in an ecosystem
ecosystem a community of organisms and their environment
food chain the transfer of food energy between organisms in an ecosystem
food web a diagram that shows the relationship between different food chains in an environment
biotic living
abiotic nonliving
producer organism, such as a plant, that makes its own food
consumer organism that does not make its own food, but must consume or eat plants, animals or both
photosynthesis the process by which plants make their own food using sunlight, water, carbon dioxide, and nutrients
symbiosis the relationship between different organisms in an ecosystem when at least one organism benefits from the relationship
mutualism a type of symbiosis in which both organisms benefit
commensalism a type of symbiosis in which one organism benefits and the other is unaffected
parasitism a type of symbiosis in which one organism benefits and the other is harmed
predation occurs when one organism (predator) eats another (prey)