Natural Selection Generation Genius

Which of the following is an environmental pressure?

• The air pressure in the atmosphere

• Breeding between two members of the same species

• A lake that's gradually running out of water

• A fight between two members of the same species

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In the phrase "survival of the fittest", the term "fittest" refers to:

• The best-adapted organism

• The biggest organisms

• The smartest organisms

• The fastest organisms

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Which variation would be most likely to benefit any organism, regardless of environment

• The ability to produce energy more efficiently.

• The ability to swim deeper

• Markings that help it blend into its background.

• Bigger claws and teeth

On Darwin's tree of life, organisms at the base of a branch:

• Go extinct from environmental pressures.

• Evolve into the closest species on the tree's trunk.

• Give rise to species farther down the branch.

• Are less fit than species in the middle of a branch.

What is the main concept behind natural selection as proposed by Charles Darwin?

• Survival of the fittest

• Inheritance of acquired traits

• Use and disuse of organs

• Spontaneous generation

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NGSS.MS-LS4-2

Which of the following best describes the process of natural selection?

• Random mutations lead to new species

• Organisms with favorable traits reproduce more successfully

• All organisms have an equal chance of survival

• Environmental changes create new traits

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NGSS.MS-LS4-4

In the context of natural selection, what does 'fitness' refer to?

• The physical strength of an organism

• The ability to survive and reproduce

• The speed at which an organism can run

• The intelligence of an organism

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Which of the following is an example of natural selection in action?

• A farmer breeding cows for more milk

• A bird species developing longer beaks over generations

• A scientist creating a new plant species in a lab

• A dog learning a new trick

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NGSS.MS-LS1-4

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How does natural selection lead to evolution?

• By creating new species overnight

• Through gradual changes in populations over time

• By eliminating all weak organisms

• Through sudden environmental changes

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What role do mutations play in natural selection?

• They always harm the organism

• They provide genetic variation

• They are always beneficial

• They have no effect

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