Biological Evolution - Unity and Diversity

Which best describes the process of natural selection?

• Survival of the fittest

• Random mutation

• Artificial selection

• Genetic drift

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NGSS.MS-LS4-4

An adaptation is a beneficial trait that allows an organism to survive. Why are adaptations important?

• They help organisms find food.

• They allow organisms to survive in their environment.

• They make organisms more attractive.

• They increase the size of organisms.

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NGSS.MS-LS4-4

Organisms that likely have common ancestors are organized using which method?

• Cladistics

• Taxonomy

• Ecology

• Genetics

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NGSS.MS-LS4-2

How might natural selection occur?

• Through random mutations

• By survival of the fittest

• Via genetic drift

• Through artificial selection

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NGSS.MS-LS4-4

On the Galapagos Islands, the beaks of the finches were observed to be shaped very different. What is the likely reason for this?

• Natural selection due to different food sources

• Random genetic mutations

• Climate change

• Human intervention

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NGSS.MS-LS2-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?

• They swim the same way.

• They eat the same food.

• They live in the same area of the ocean.

• They have similar anatomies.

Tags

NGSS.MS-LS4-2

In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color?

• the amount of sunlight present

• the fox’s habitat

• the fox’s genes

• the fox’s age

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NGSS.MS-LS1-5

How might a comet affect past life on Earth?

• By causing mass extinctions

• By creating new habitats

• By altering the climate

• By introducing new species

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NGSS.MS-ESS3-2

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NGSS.MS-LS4-1

Which best describes homologous structures?

• Structures that have a similar function but different evolutionary origins

• Structures that have a similar evolutionary origin but may have different functions

• Structures that are identical in different species

• Structures that are unique to a single species

Tags

NGSS.MS-LS4-2

Which best describes analogous structures?

• Structures that have a similar function but different evolutionary origins

• Structures that have a similar function and the same evolutionary origins

• Structures that have different functions but the same evolutionary origins

• Structures that have different functions and different evolutionary origins

Tags

NGSS.MS-LS4-2