Succession · Botany

What is the primary difference between primary and secondary succession?

  1. Primary succession occurs faster than secondary succession.
  2. Primary succession starts on bare rock; secondary starts on existing soil
  3. Secondary succession only occurs in aquatic environments.
  4. Primary succession is driven by animals, while secondary is driven by plants.
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Correct answer: Primary succession starts on bare rock; secondary starts on existing soil

Primary succession occurs in 'new' environments where no soil or life previously existed, such as volcanic islands. Secondary succession occurs after a disturbance has destroyed a community but left the soil intact.

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