Natural Selection Review

Which of the following describes what is meant by Natural Selection?

• An organism will survive no matter what its adaptations may be

• An organism with adaptations that allow it to obtain resources and reproduce more effectively than others will survive.

• An organism with adaptations that do not allow it to reproduce as effectively as others will survive.

• No organisms will survive.

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Which best describes an adaptation?

• A trait that helps an organism to survive in its environment.

• A trait that does not help the organism to survive in its environment.

• A trait that the organism can change when he wants.

• The place where an organism lives.

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What does the term variation mean?

• The same traits in a population.

• The same ways traits are expressed in a population.

• The different ways that traits are expressed in a population.

• The place where an animal lives.

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Which of the following variations would help members of a rabbit population survive if the climate turned very hot?

• Thinner fur

• Ability to jump higher

• Ability to run faster

• Ability to eat more

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Animals are born with their adaptations due to genes.

• True

• False

Mutations are a source of variations.

• True

• False

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Which of the following is an environmental pressure that might affect the survival of a species?

• Predators

• Disease

• Seasonal Change

• All of the Above

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Before the industrial revolution the birds were eating more black moths. After the industrial revolution the birds started eating more white moths. Why

• The birds thought the white moths tasted better.

• There were not any black moths to eat

• The white moths stood out on the dark trees so the birds could see them easier.

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

• Because the trait is an acquired phenotype.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because they are more likely to survive and reproduce.

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Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice

• The hawks eat more light mice than dark mice because they can see the light mice more easily

• The hawks eat more dark mice than light mice because the dark mice taste better

• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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