Evolution Quiz

Brown and green grasshoppers live in a field of green grass. Birds near the field feed on the grasshoppers. Which statement best describes the expected changes in the populations of the brown grasshoppers and green grasshoppers over time in this field?

• The populations of brown grasshoppers and green grasshoppers will both increase over time.

• The population of brown grasshoppers will decrease more rapidly than the population of green grasshoppers over time.

• The population of brown grasshoppers will increase over time, while the population of green grasshoppers will decrease over time.

• The population of brown grasshoppers will increase over time, while the population of green grasshoppers will remain constant over time.

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The majority of the forest where a moth species lives has dark trees. Which statement is true?

• Dark-colored and light-colored moths have an equal chance of surviving and producing offspring.

• Dark-colored and light-colored moths will mate and produce gray moths.

• Light-colored moths are more likely to survive and produce offspring.

• Dark-colored moths are more likely to survive and produce offspring.

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Where would a population of wild white rabbits most likely be found?

• in a tundra

• in a desert

• in a prairie

• in a rain forest

Which statement best describes a genetic trait that allows salmon and their offspring to survive in aquatic environments?

• Salmon have a single heart.  

• Salmon breathe through gills.

• Salmon reproduce by laying eggs.

• Salmon have teeth to help digest food.

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Which factor most influences the survival of a population in an ecosystem?

• phenotype

• lifestyle choices

• genetic variation

• selective breeding

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In a given population, which members are most likely to survive and produce offspring?

• Those with traits suitable for the environment.

• Those who have the fewest recessive genes.

• Those who are the most attractive.

• Those with the most genes.

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Which statement best explains the theory of “survival of the fittest”?

• The strongest and most capable animals will control the ecosystem.

• Many organisms will seek new ecosystems to increase their population size.

• Populations unable to adapt to environmental changes will most likely live a long life.

• Organisms that can best endure environmental conditions will most likely have a larger population size.

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Which change is most likely to affect an entire species?

• a change in one individual’s genes

• a change in environmental conditions

• a change in the behavior of a few individuals

• a change in the lifestyle choices of a few individuals

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A farmer sprayed herbicide in a wheat field to eliminate weeds and wildflowers that compete with the wheat plants. After several weeks, the farmer noticed some of the wildflowers were still growing in the wheat field. Why did some of the wildflowers most likely continue to grow after being sprayed with the herbicide?

• Some of the weeds were genetically mutated and became wildflowers.

• The herbicide killed the weeds but served as a fertilizer for the wildflowers.

• Some of the wildflowers were genetically adapted to be resistant to the herbicide.

• The herbicide was absorbed and then converted into nutrients by the wildflowers.

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The practice of creating bonsai trees involves trimming the roots of trees to keep them small. What would most likely happen if the roots of a bonsai were left alone?

• The tree would die.

• The tree would stay the same height.

• The tree would grow to its full height.

• The tree would grow some but never to full height.

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