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Unit 5
Vocab
Question | Answer |
---|---|
extinct (species) | species that no longer exist |
biodiversity | variety of living organisms on earth |
symbiosis | relationship in which organisms live closely together over a long period of time. |
parasitism | relationship in which one species, the parasite, feeds on a second organism, the host |
mutalism | symbiotic relationship in which both species benefit |
commensalism | relationship in which one organism benefits while the other is nit affected |
natural selection | process that makes it more likely that organisms with the best characteristics for survival in a specific environment will survive, reproduce, and pass on their advantageous genetics traits to offspring |
endangered species | species that has so few individuals remaining that extinction is a possibility in the near future |
threatened species | species whose numbers are dwindling to a point at which the species could become endangered |
adaptation | special, inherited characteristics that helps an organism better survive in it's environment and which is developed over time. |
structural adaptation | physical characteristics that helps an organism survive its enviroment |
behavioral adaptation | way in which an organism acts or responds to its environment in order to respond |
mimicry | adaptation in which one species copies the appearance of behavior of another species |
reflex | behavior that is triggered automatically by something outside an organism |
instinct | behavior that an organism carries out because it is genetically prone to do so |