Evolution Test Extra Credit Version 2

The fossils found closer to the surface of the ground are generally -

(a)  

• Younger & more complex
• Older & simpler
• Younger & simpler
• Older & more complex

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The forelimbs of mammals have similar anatomy because these groups descended from a recent common ancestor. Their bone structure is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

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NGSS.MS-LS4-2

Which best describes the phrase survival of the fittest?

• strongest in a population are most successful

• fastest in a population are most successful

• those that can survive and reproduce are most successful

• those that can live the longest are most successful

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• Stabilizing Selection

• Directional Selection

• Disruptive Selection

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• Stabilizing Selection

• Directional Selection

• Disruptive Selection

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Which can be used as evidence for evolution (change over time)?

• Fossils

• Homologous Structures

• Embryo Similarities

• Biochemical Analysis

• All are examples of evidence of evolution

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_______ believed that organisms develop traits needed for survival and that traits that were unused would become weaker and gradually disappear. 

• Darwin
• Lamarck
• Mendel
• Watson

What is the significance of genetic variation in evolution?

• It has no impact on evolution.

• It provides the raw material for natural selection to act upon.

• It leads to the extinction of species.

• It ensures that all individuals in a population are identical.

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What is stabilizing selection?

• A type of natural selection that favors extreme phenotypes and increases variation.

• A type of natural selection that favors average phenotypes and reduces variation.

• A process that leads to the extinction of certain species.

• A mechanism that promotes genetic drift in small populations.

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