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Mid-Term Vocab 3

Ecology Mid-term Vocabulary 3

Adaptations Characteristics that allow organisms to live in their environments
Natural Selection Well adapted individuals will survive and reproduce better than poorly adapted individuals.
Niche The role or job an organism has in its habitat
Competition The struggle between organisms to survive as they attempt to use the same limited resources
Symbiosis A close relationship between 2 species, where at least 1 benefits
Mutualism Both species benefit
Commensalism One species benefits, nothing happens to the other species
Parasitism One organism (parasite) benefits by harming the other organism (host)
Predation When on organism kills another for food
Predator the hunter
Prey the food
Limiting Factor The factor that limits growth in an ecosystem (food, water, living space, mates)
Carrying Capacity the number of organisms an ecosystem can support
Created by: Christie Ecology



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