Natural Selection

According to evolution, what happens to the frequency of traits in a population of species over time?

• a. The frequency of traits randomly changes

• b. The frequency of traits never changes

• c. The frequency of advantageous traits increases over time

• d. The frequency of advantageous traits decreases over time

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Which of the following is NOT a part of Darwin’s Theory of Natural Selection?

• a. There is little to no variation among the individuals in sexually reproducing species

• b. Individuals compete with each other for resources

• c. Competition can lead to death of individuals

• d. Individuals who survive are more likely to reproduce and pass traits to offspring

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Which organisms are more likely to survive, reproduce and pass their traits to offspring?

• a. Organisms that are well-adapted to the environment

• b. Organisms that are not well-adapted to the environment

• c. Organisms that are less fit

• d. Organisms that reproduce very quickly

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What is evolution?

• a. The loss of a species (a species dies out)

• b. The change of traits in a species over time

• c. The predation of one species on another species

• d. The conversion of a carnivore (meat eater) into an herbivore (plant eater)

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What is an adaptation?

• b. A favorable trait, which helps an organism survive

• c. An unfavorable trait, which is detrimental to the survival of an organism

• d. A characteristic that makes an organism “less fit”

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What is a source of variation in a sexually reproducing species?

• a. Mutations

• b. Recombination

• c. Both a and b

• d. Neither a or b

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Which of the following is a resource that organisms compete for?

• Water

• Space

• Mates

• All of the above

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Why do organisms compete with each other for resources?

• a. There is an unlimited supply of resources

• b. There is a limited supply of resources

• c. Organisms produce more offspring than can survive

• d. Both b and c

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Fossils are an important piece of evidence for evolution because:

• a. They show that organisms have changed over time on Earth

• b. They demonstrate that organisms have become more complex

• c. They suggest there are similarities between ancient organisms and present organisms, suggesting that all living things are somehow related

• d. All of the above

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What supports evolution?

• a. The fossil record

• b. Embryology similarities

• c. Genetic similarities

• d. Anatomical similarities

• e. All of the above

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