Darwin's Theory of Evolution

Which of the following do scientists as evidence to support the theory of evolution?

• DNA similarities

• Comparing early stages of embryos

• Comparing organisms' body structures

• Studying the fossil record

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Charles Darwin was a scientist whose notable visit to the ___________ shaped his ideas about the theory of evolution.

• Hawii

• Galapagos Islands

• South America

• Equador

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Which statement summarizes the theory of evolution?

• Natural processes cause living things on Earth to change over time.

• Living things in younger rocks are the common ancestors of those in older rocks.

• Individual organisms can choose to adapt to their environment.

• Fossils represent only a small percentage of all the species that have ever lived.

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Whales, which live in the water, have hip bones. Which of the following best explains why whales have hip bones?

• Whales have evolved this structure because it might be useful in the future.

• Whales are able to interbreed with other animals that have hips.

• Whales have a diet that includes other animals that have this structure.

• Whales share a common ancestor with animals that walk on land.

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What does Darwin's theory of evolution suggest?

• species change over time

• extinct species are not related to living species

• different species can interbreed

• animals that look alike are most closely related

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Who was the scientist most famous for his study of evolution?

• Theodor Schwann

• Robert Hooke

• Charles Darwin

• Rudolf Virchow

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How does embryology support the theory of evolution?

• It shows that embryos who develop similarly share a common ancestor

• It shows that embryos who develop similarly are not related to one another

• It shows that organisms have the ability to evolve, or change, over time

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Charles Darwin’s idea was that organisms that descended from a common ancestor had different traits from the ancestor. Therefore, he referred to this as ____________.

• descent with modification

• natural selection

• adaptations

• homologous structures

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Which pattern of change in living things does the fossil record show?

• Life on Earth changed from small, single-celled organisms to large, multicellular organisms.

• All the types of living things on Earth have remained the same over time.

• Ancient organisms were far more complex than organisms found living on Earth today.

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An adaptation is

• a trait that helps an organism survive and reproduce in its environment.

• the process of change over time.

• when two or more organisms are related through descent.

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