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Life Science Ch.2.1

Energy Flow in Ecosystems

TermDefinition
Producer An organism that can make its own food.
Consumer An organism that obtains energy by feeding on other organisms.
Herbivore A consumer that obtains energy by eating only plants.
Carnivore A consumer that obtains energy by eating only animals.
Omnivore A consumer that obtains energy by eating both plants and animals.
Scavenger A carnivore that feeds on bodies of dead or decaying organisms.
Decomposer An organism that gets energy by breaking down biotic wastes and dead organisms
Food chain A series of events in an ecosystem in which organisms transfer energy by eating and by being eaten.
Food web The pattern of overlapping feeding relationships or food chains among the various organisms in an ecosystem.
Energy pyramid A diagram that shows the amount of energy that moves from one feeding level to another in a food web.
first level consumer organisms that eat producers; also called primary consumers
Second level consumer eats first level consumer
Third level consumer organisms that eat secondary consumers; also called tertiary consumers
apex predator a predator residing at the top of a food chain upon which no other creatures prey
Autotrophs organisms that can capture energy from sunlight and use it to produce their own food
Heterotrophs organisms that cannot make their own food
Homeostasis process by which organisms maintain a relatively stable internal environment
Photosynthesis process by which plants use light to convert water and carbon dioxide into sugar (food)
What do plants need for photosynthesis? sunlight, carbon dioxide and water
Chloroplast an organelle found in plant cells where photosynthesis occurs
Created by: DanetteWeisman
Popular Ecology sets

 

 



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