Factors Affecting Biological Diversity-Standard Bio 4.4

Question 1

Fill in the blank below with the word that best completes the sentence.Natural selection leads to , a process of change in a population over time.

Revolt · Accepted Answer

evolution

Question 2

Complete the sentence below by selecting the correct words from the drop-down menus.Factors that affect natural selection include , , and .

Revolt · Accepted Answer

variation; Selection 1: variation; Selection 2: overpopulation; Selection 3: adaptation

Question 3

What term describes an evolutionary process through which a new species emerges?

Revolt · Accepted Answer

speciation

Question 4

A population of wildflowers is separated by an eight-lane superhighway. Pollen is often carried by the wind across the highway and can pollinate the flowers on the other side of the highway. Can speciation occur in this situation?

Revolt · Accepted Answer

No, because the populations are not reproductively isolated.

Question 5

A population of deer is separated by an emerging volcano. The two populations come back into contact 200 years later, but are incapable of breeding. Which of the following best describes the process that occurred?

Revolt · Accepted Answer

speciation

Question 6

Which piece of evidence would most go against the scientist’s argument and suggest that the butterflies are actually different species?

Revolt · Accepted Answer

The butterflies have different mating seasons.

Question 7

Which graph best represents disruptive selection?

Revolt · Accepted Answer

Graph A

Question 8

Which graph best represents directional selection?

Revolt · Accepted Answer

Graph B

Question 9

Results in the evolution of the species: Results in new species: Favors traits at the two extremes: No increase in diversity: One extreme trait is favored: Diversity decreases: Diversity increases:

Revolt · Accepted Answer

Selection 1: directional selection; Selection 2: disruptive selection; Selection 3: disruptive selection; Selection 4: directional selection; Selection 5: directional selection; Selection 6: stabilizing selection; Selection 7: disruptive selection

Question 10

Which type of natural selection is at work here?

Revolt · Accepted Answer

stabilizing selection

Factors Affecting Biological Diversity-Standard Bio 4.4 Answers

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