Natural Selection and Adaptations

What is the advantage of having different shaped beaks?

• To look different from other species.

• To be able to eat the food readily available in the environment.

• To protect itself against predators.

• To protect itself against prey.

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The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.

• The acquired traits of a population.

• Hair color and eye color

• Attractive features.

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What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

Almost all adaptations started off as?

• selective breeding

• physiological

• structural

• mutation

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The differences among a species, like different bird beaks, are called

• genes.

• variations.

• traits.

• theories.

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These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection

• Variation

• Homeostasis

• Extinction

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Why are advantageous (helpful) traits more likely to be passed onto offspring?

• Because the parents with the trait are more likely to survive and reproduce.

• Because they come from dominant males

• Because the parents with the trait died before reproducing

• Because the trait is an acquired by the environment

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The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

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Which best describes the role of mutations in natural selection?

• Mutations help an organism to better survive in their environment

• An organism may acquire a helpful mutation by interacting with the environment

• A mutation may result in an adaptive trait that makes an organism more likely to survive and reproduce

• Organisms with certain traits are more likely to win competitions for mutations

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Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number
  

• become extinct
  

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