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8.11A Food Webs

8th Grade - Food Webs

TermDefinition
Food Chain A path of food energy from the Sun to the producer then transferred to a series of consumers
Food Web The elaborate interconnected feeding relationship in an ecosystem
Trophic Level The position an organism occupies on the food web
Producer An organism that is capable of performing photosynthesis to use the Sun's energy directly
Consumer An organism that must consume other organisms for nutrients
Herbivore An organism that consumes only plants
Carnivore An organism that consumes other animals
Omnivore An organism that consumes both animals and plants
Parasite An organism that survives on a host of organism and causes harm to the host
Host An organism that is used by another organism for nutrients, shelter or transport. It is harmed by the relationship.
Predator An organism that hunts for its food
Prey An organism that is hunted by other organisms for food
Aquatic Ecosystem An ecosystem that is located in water
Terrestrial Ecosystem An ecosystem that is found on land
Marine Ecosystem An ecosystem that is found in oceans and other salt water
Freshwater Ecosystem An ecosystem found in streams, lakes and rivers where there is less than 1% salt content.
Autotroph An organism that produces its own food such as a plant
Heterotroph An organism that must use other organisms for food, such as animals.
Energy Pyramid A diagram that shows the trophic levels of organisms in a food web.
Commensalism A relationship where one is benefitted and the other is neither benefitted or harmed
Mutualism The relationship between organisms where both benefit.
Decomposer Organism such as bacteria and fungi that break down the remains of dead plants and animals.
Created by: AMS SCIENCE
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