Theory of Evolution and Natural Selection Vocabulary Words

A group of organisms that are similar and can reproduce among themselves is called a what?

• group

• species

• adaptation

• mammal

Who produced the theory of natural selection?

• Charles Darwin

• Gregor Mendel

• Isaac Newton

• Albert Einstein

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Which term means that only the best suited organisms will survive and reproduce?

• geographic isolation

• extinction

• natural selection

• evolution

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Petrified remains of past living things is called what?

• fossil record

• vestigial structures

• rocks

• skeleton

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Gradual changes in a species over a long period of time is referred to as what?

• evolution

• species

• variation

• natural selection

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What is it called when populations of organisms are separated physically by geographic barriers such as water or mountains?

• extinction

• endangerment

• geographic isolation

• natural selection

What do we call structures that don't seem to have a function today, but probably had a purpose in the past?

• adaptations

• homologous structures

• variations

• vestigial structures

What do we call body parts that are similar in origin and structure?

• species

• homologous structures

• vestigial structures

• bones

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Any trait that makes an organism different from the rest of its species is called what?

• variation

• mutation

• adaptation

• camouflage

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Any variation that makes an organism better suited to its environment is called?

• species

• extinction

• adaptation

• vestigial structures

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