Species Change Over Time

Who established that all species of life descended over time from common ancestors?

• Albert Einstein

• Gregor Mendel

• Charles Darwin

• Robert Hooke

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

_______ are unique traits developed by organisms to help them survive, thrive, and reproduce in their particular environment.

• cells

• mutations

• chromosomes

• adaptations

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Natural selection is defined as

• the changes in the characteristics within a population that lead to survival.

• the process by which humans select the most desirable organisms in a population.

• the changes that occur in a population that do not affect survival.

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NGSS.MS-LS4-4

Some organisms have favorable traits that are well-suited to their environments. Organisms with this advantage are more likely to thrive, reproduce, and pass their traits to future generations than organisms without favorable traits. This process is known as

• genetic engineering

• natural selection

• selective breeding

• artificial selection

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NGSS.MS-LS4-4

How long does it take for a species to change?

• A few years

• Hours

• A very long time

• A month or two

Which is a behavioral adaptation?

• migration

• sharp claws

• long neck

• thorns

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NGSS.MS-LS1-4

Which is a physical adaptation?

• migration

• hibernation

• gills

• burying eggs in sand

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NGSS.MS-LS4-2

Which of the following is an example of natural selection?

• Cricket frogs prefer to sleep during the day, while red-eyed tree frogs prefer to sleep during the night.

• Pesticides are sprayed in a field, resulting in an increase in crop growth and a decrease in insect population.

• Rabbits with a mutation for longer, thicker fur survive an unusually cold winter, while many normal rabbits do not survive.

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NGSS.MS-LS4-4

An inherited trait that makes an individual different from other members of its species is called (can be good or bad) --

• an adaptation
• a variation
• species
• natural selection

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NGSS.MS-LS4-4

Which term refers to the process by which individuals that are better adapted to their environment are more likely to survive and reproduce?

• natural selection
• overproduction
• competition
• variation

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NGSS.MS-LS4-4