HMH Unit 8 Evidence for Evolution

A lion makes more cubs than the Sahara Desert can support (there's not enough prey around), so only a few of the cubs survive to become adults. They live on to reproduce.
Of the four parts of natural selection, which is this an example of?

• overproduction
• genetic variation
• selection
• adaptation

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Due to a mutation, some jaguars inherit larger jaw sizes than other jaguars within that population and this trait is passed down from parent to offspring. This gives those jaguars an advantage when it comes to hunting down turtles as prey.
Of the four parts of natural selection, which is this an example of?

• overproduction
• genetic variation
• selection
• adaptation

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A beetle's ability to camouflage (blend in) with a nearby leaf allows it to escape a hungry frog's appetite.
Of the four parts of natural selection, which is this an example of?

• overproduction
• genetic variation
• selection
• adaptation

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Four present-day realities that some scientists use to support Darwin's theory of evolution?

• fossils
  DNA
  common bone structures
  developmental similarities
• fossils
  DNA
  common bone structures
  saliva
• fossils
  common bone structures
  plants
  developmental similarities
• H₂O
  DNA
  common bone structures
  developmental similarities

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In both the past and the present, humans have selected plants or animals for breeding based on desirable traits. This process is known as...

• artificial selection
• natural selection
• farming
• cropping

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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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the process in which populations change over time

• artificial selection
• natural selection
• evolution
• mutation

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The human appendix is a __________ structure that suggests that humans evolved from plant-eating ancestors.

• homologous
• embryonic
• essential
• vestigial