Chapter 6 Evolution Test

In the trashcan in Isaac’s room, there were many wrappers from snacks. At the bottom of the trash there was a candy wrapper. In the middle, there was a piece of plastic from a slice of cheese. On the top of the rest of the trash is a granola bar wrapper. Assuming the trash has never been mixed up, which snack did Isaac eat the longest ago? Which type of dating did you use to answer?

• the granola bar; absolute-age dating

• the candy bar; relative-age dating

What is suggested by the figure?

• The modern horse is related to other extinct species.

• Horses appeared no more than a million years ago and had no ancestors before that time.

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Although Darwin did not know about genes, he could see that animals of the same species who had slight variations that helped them to survive longer could produce more offspring than animals who were not as well equipped. Which of the following could be an example of a variation that would help a group of animals survive?

• choosing a cat to take home from an animal shelter

• turtles with long necks on an island where the food source was elevated

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Which of the following do some scientists believe shows evidence for evolution of living species?

• homologous structures

• vestigial structures

• all of the above

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Which animal would you expect a dog’s genes and proteins to be the most like?

• wolf

• bear

• alligator

• lion

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_____________ are the remains of life from an earlier time.

• sedimentary rocks

• fossils

• variations

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Which of the following is NOT a fossil?

• outline of a fern found in a rock

• baby mammoth found in a glacier

• old stone tools found in a cave

Scientists can tell whether organisms are closely related by comparing their:

• Hair

• DNA

• scientific names

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A change in the hereditary features of a type of organism over time is known as:

• growth

• biogenesis

• evolution

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You are studying two animal species. You hypothesize that they are very distantly related to each other. What would be most useful for testing your hypothesis?

• comparing their skulls

• analyzing their DNA

• looking up the answer on the Web

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