Fossils as Evidence of Evolution

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry

• We can observe changes in life forms by observing the fossil record

• Many animals have vestigial structures from an ancestor

• All of these are evidence for evolution

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Which of the following is not evidence of evolution or common ancestry?

• Vestigial Structures

• Homologous Structures

• Fossil Records

• Mutations

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The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

• Fossil A and C are the same age
  

• Fossil B is older than fossil C

• Fossils A is older than fossil B

• Fossil D is older than fossil C

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If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative

• early ancestor

• unrelated organism

• embryological stage

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The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct from the evolutionary perspective?

• Fossil A and C are the same age

• Fossil B is older than fossil C

• Fossils A is older than fossil B

• Fossil D is older than fossil C

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About how long ago did the first primates appear on Earth according to fossil evidence?

• About 100 million years ago

• About 100 years ago

• About 2 million years ago

• About 225 million years ago

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Whales are aquatic mammals that contain a pelvis bone.  Even though it does not aid in its movement, the function must have been used by a common ancestor of the whale.  Thus, the pelvis is referred to as a(n)

• vestigial structure

• analogous structure

• homologous structure

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Which of the following is a primary way fossils provide evidence for evolution?

• They show the direct lineage of species.

• They demonstrate the existence of extinct species.

• They provide DNA samples of ancient organisms.

• They reveal the exact age of the Earth.

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What type of fossil evidence supports the theory of evolution by showing transitional forms?

• Trace fossils

• Index fossils

• Transitional fossils

• Mold fossils

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How do fossils help scientists understand evolutionary relationships?

• By providing genetic material for analysis

• By showing physical characteristics of ancient organisms

• By indicating the exact time period of organism existence

• By revealing the diet of ancient organisms

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