Pretest

Question 1

What is the role of a pioneer species in primary succession?

Revolt · Accepted Answer

A: to produce the soil

Question 2

Which disturbance would result in primary succession?

Revolt · Accepted Answer

B: the formation of Surtsey, a volcanic island off of the southern coast of Iceland

Question 3

How does a whale fall community affect ocean sediment?

Revolt · Accepted Answer

D: The decomposition of the whale enriches the sediment.

Question 4

Which factor can cause secondary succession?

Revolt · Accepted Answer

D: clear cutting

Question 5

On May 18, 1980, Mount St. Helens in Washington State experienced a huge volcanic eruption after a magnitude 5 point 1 earthquake. During the eruption, hot ash and pumice poured down the west, south, and east sides of the mountain, melting the snow and ice at the top of the volcano and producing volcanic mudflows. Which type of process first occurred in the ecosystem around Mount St. Helens after it erupted?

Revolt · Accepted Answer

A: primary succession

Question 6

The number of rhinoceroses has decreased to near extinction. How are rhinoceroses classified under the Endangered Species Act?

Revolt · Accepted Answer

A: endangered

Question 7

Why are lichens a good pioneer species after a volcanic eruption?

Revolt · Accepted Answer

D: They are able to grow on bare rock.

Question 8

Which statement best describes ecological succession?

Revolt · Accepted Answer

C: It occurs after a disturbance.

Question 9

What is most likely to result immediately after a rainforest in Brazil is clear-cut?

Revolt · Accepted Answer

C: secondary succession

Question 10

Which factors involving the activities of people are a threat to biodiversity?

Revolt · Accepted Answer

A: poaching and habitat loss

Pretest Answers

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