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First Quarter Vocab.

First Quarter Interim Vocabulary Review (Ecology)

Biotic The living parts of an ecosystem.
Abiotic The non-living parts of an ecosystem.
Producer/Autotroph An organism that makes its own food through photosynthesis.
Consumer/Heterotroph An organism that consumes other organisms for energy.
Decomposer An organism that breaks down dead, decaying organisms and returns nutrients back into the soil.
Herbivore And organism that eats only plants.
Carnivore An organism that eats only meat.
Omnivore An organism that eats BOTH plants and animals.
Scavenger And organism that eats dead organisms.
Food Chain A model that shows how matter and energy move through an ecosystem in a series of steps showing which organisms transfer energy by eating or being eaten. Each level of a food chain represents a feeding step in the transfer of matter and energy.
Food Web A model that shows all of the possible feeding relationships in each trophic level; It links all of the food chains in an ecosystem.
The Sun's Role in Food Chains and Food Webs It is the ultimate source of energy for all living things.
Energy Pyramid A model that shows how energy flows up the food chain.
Symbiosis A close relationship between two species that benefits at least one of the species.
Mutualism A relationship in which both species benefit. :) / :)
Commensalism A relationship in which one species benefits and the other species is neither helped nor harmed. :) / :I
Parasitism A relationship where one organism lives inside the other and harms it. :) / :(
Predator An organism that eats other animals for food. They are usually carnivores or omnivores.
Prey An organism that usually gets eaten by a predator. They are usually herbivores.
Competition The act of competing for resources in an environment with other species.
Created by: 200350563