Natural Selection

How do you "win" at natural selection?

• survive

• go extinct

• survive & reproduce

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NGSS.MS-LS4-4

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

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Which organisms are most likely to survive?

• the best adapted
• the fastest
• the strongest
• the most domesticated (tamed)

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The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth
• Light moth
• Both will be equally successful
• Neither will be successful

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Why is the mouse population changing over time?

• 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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These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection
• Variation
• Homeostasis
• Extinction

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When an organism of a species has an adaptation, it will compete for resources better, survive longer and pass that adaptation on to it's offspring. This process is called

• evolution by natural selection
• artificial selection
• inbreeding
• outbreeding

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NGSS.MS-LS4-4

Which of the following explains adaptation.

• An individual organism changes to meet its needs in the environment. These changes pass down to their offspring.
• The species as a whole changes their characteristics.
• Beneficial traits allow organism to survive and pass on those traits
• New characteristics arise in a species as needed.  If these traits are helpful, they are passed down.

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A large herd of goats lives in a field full of poison ivy.  Some goats are able to eat the poison ivy while others have become sick when they eat it. Over time the herd as a whole will tend to

• Become more likely to eat poison ivy.
• Become less likely to eat poison ivy.
• Not change in the proportion of goats that can and can not eat poison ivy.
• Eat all the poison ivy and leave only plants all the goats can eat.

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When an environment changes faster that an species can adapt, the most likely outcome is...

• ...biological evolution.
• ...voluntary mutation
• ...species extinction
• ...selective breeding

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