Evolution 8.L.4.2 part 1

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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A strawberry farmer finds that, after a hard freeze, some of his

strawberries are still alive. Which best explains why these strawberries

were able to survive?

• They have larger leaves to protect the fruit than the other

  strawberries.

• They have different genetic variations that cause them to be more

  resistant to cold temperatures.

• They are able to reproduce more quickly than the other strawberries.

• The color of the strawberries is darker, and they maintain their

  temperature better than other strawberries.

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Tigers and household cats are members of the same family; however,

their sizes are vastly different. What is the cause of this difference?

• biochemical makeup

• behavioral makeup

• genetics

• habitat size

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In which way are desert plants best adapted to live in a dry area?

• They lack a root system.

• They have woody stems.

• They lack broad, flat leaves.

Turtles have adapted to their habitat to protect themselves from their

predators. Which best describes this adaptation?

• mimicry

• parasitism

• protective covering

Which adaptation has occurred due to genetic variation allowing some

species to seem invisible to predators?

• ability to make loud noises

• exceptional vision

• camouflage

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The prairie dog has many adaptions to its ecosystem. Which best

explains the genetic variation in the prairie dog that provided adaptation

to its ecosystem?

• exceptional vision to see a great distance on the prairie

• claws to dig tunnels for shelter from predators

• long tails to anchor themselves to trees

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Poison ivy has developed genetic adaptation to defend itself against

consumers. Which characteristic would most likely increase the ivy’s

chance of survival?

• sweet taste of the plant

• color variation of the leaves

• oily substance on the leaves

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How does genetic variation affect an organism’s ability to adapt to its

environment?

• increases it

• decreases it

• has no known effect in most organisms

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Due to a genetic variation, a cheetah is unable to run as fast as other

normal cheetahs. Which would be the most important for the survival of

the cheetah?

• competition for prey

• competition for mates

• competition for shelter

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