Chapter 17 Darwin's Theory of Evolution Review

During Darwin's time on the Beagle he experienced an earthquake. How did this influence his ideas?

• It showed how organisms that lived in the ocean could live on land.

• It showed how features could be changed by gradual processes

• It showed how populations change over time to become better suited to their environment

• It showed that all living things are engaged in a constant struggle for survival

A characteristic that makes an organism well suited to its environment is called a(n)?

• natural selection

• trait

• adaptation

• variation

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Which feature of the finches helped support Darwin's theory of Natural Selection?

• Finches had different beak shapes to suit their food source

• Finches had unusual reproductive behavior

• Finches changed features during their lifetime

• Finches were able to survive from predator attacks

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Malthus' idea was that humans would always struggle to find resources. Which of Darwin's ideas was influenced by Malthus?

• fossil species change over time to produce new species

• big changes in species happen very quickly

• organisms can change in their life time to be better suited to their environment

• All living things are in a constant struggle for existence

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In a species that has multiple color variations which organisms would be more likely to survive and reproduce?

• The species that has a color variation that stands out from its surroundings

• The organism that has a color variation that matches its surroundings

• The color variation has no effect on predator attacks

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If flowers with longer roots are able to get more water from the ground which of the following would you expect to become more common after a period of drought?

• Flowers with short root systems

• Flowers with average root systems

• Flowers with the longest root systems

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Darwin believed that not all organisms in a species would be able to survive and reproduce because

• random occurrence of death

• limited resources

• death from disease

• extinction due to climate change

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Which of the following statements is true?

• All individuals of a population of animals or plants are identical

• Genetic variations happen only in plants

• Genetic variations occur in all living things

• All animals of a population are identical

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If birds with short thick beaks are better at getting food in a specific environment, what do you expect the population to look like in 50 years?

• there will be no change in beak shape

• all of that species of birds will have died off

• most birds will have short thick beaks

• every bird will have short thick beaks

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Which of the following is the type of adaptation that effects how an animal acts in a situation?

• physiological

• structural

• behavioral

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