Adaptations, Natural Selection, & Artificial Selection LS4.3.4.5

Peppered moths were able to adapt to their environment because

• They decided to change colors in order to survive

• The population had varying traits

• Pollution covered the trees

• The trees camouflaged all moths

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The differences among a species, like different bird beaks, are called

• genes.
• variations.
• traits.
• theories.

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What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

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An example of a behavioral adaptation is

• The long neck of a giraffe
• Penguins huddling together for warmth
• A camel's hump used to store water
• A polar bear's white fur used for camouflage

Parrots have special feet, with two toes on the front and back to help them cling to branches.

• Behavioral Adaptation
• Structural Adaptation
• Functional Adaptation

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After the industrial revolution began, most of the peppered moths observed were dark in color. Why?

• Light-color moths were more fit for survival because they were less camouflaged against the darkened, soot-covered tree bark.

• Dark-color moths were more fit for survival because they were less camouflaged against the darkened, soot-covered tree bark.

• Dark-color moths were more fit for survival because they were more camouflaged against the darkened, soot-covered tree bark.

• Light-color moths were more fit for survival because they were more camouflaged against the darkened, soot-covered tree bark.

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This would help a cactus survive in the desert.

• Roots that spread out

• thick stems/trunk

• spikes as leaves

• all of these

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Another term for Natural Selection is:

• Breeding

• Commensulism

• Communism

• Survival of the fittest

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Why is the mouse population changing over time? (You can enlarge the picture by placing your cursor on it.)

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

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

• 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 they can see the dark mice more easily

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Over time, the food supply for birds on an isolated island has changed. The supply of insects, small tender seeds, and vegetation has shrunk. The supply of tough, large, hard seeds has remained unchanged. Over several generations, changes in genetic traits of birds' beaks have occurred. Which beak is most likely to improve the survival rate of the birds?

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