Succession Answers

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Which of the following is an example of a pioneer species?

fungus

trees

shrubs

grass

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How is a climax community different than a primitive community?

The types of organisms present in a climax community are more complex.

Primitive communities tend to have less biodiversity than climax communities.

Climax communities are more stable than primitive communities.

All of the above

Which of the following is not a characteristic of a climax community?

high levels of biodiversity

presence of complex organisms

conditions suitable for all organisms

experiences no change

Human impact on ecosystems would most likely lead to secondary succession over primary succession.

Which of the following could be both a natural and a human cause of succession?

lava flow

overcutting

fire

wind

How are primary and secondary succession similar?

Both primary and secondary succession involve ecosystems that have no soil.

Both primary and secondary succession involve ecosystems recovering from a disruptive event.

Both types of succession require a pioneer species to aid recovery of ecosystems.

Primary and secondary succession have no similarities.

Which of the following is the most likely cause of succession in ecosystems?

arrival of new species

rain

loss of an animal species

wildfires

Succession performs a variety of functions within ecosystems. What is the main reason that succession is important in maintaining ecosystems?

Succession allows the earth to change.

Succession ultimately leads to climax communities, which are stable and sustainable.

Succession keeps pollution from harming ecosystems.

Succession allows simple organisms to play a larger role in ecosystems than normal.

Secondary succession can happen after primary succession or independently of primary succession.

Succession is a process, with each new community paving the way for the next.

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