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Unit 5 Vocabulary

TermDefinition
Adaptation any structure or behavior that allows a population to survive in their environment
Analogous different structures with common functions
Competition two organisms fighting for resources in the same environment
Common ancestry a lik between organisms present today and those that have gone extinct
Evolution gradual change in a species over time
Extinction the death of every member of species
Homologous Similarity built structures with different functions
Invertebrate Organsism without a backbone
Mammal organism that has hair, mammary gland, and regulates its own body temperature
Natural selection when organsims survive,reproduce, and pass favorable traits to the next generation
Species Organsimsnof the same kind that can reproduce and create offspring
Strata Layers of rock
Variation Different forms of the same trait shown by species in the same population
Vertebrate Organsims with a backbone
Vestigal a body structure that at one time was very useful, however now it has limited functions
Created by: Jgalvan31
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