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AP®Environmental ScienceCollege BoardExam QuestionsUnit 2: The Living World: BiodiversityEcological Succession

Ecological Succession (College Board AP® Environmental Science): Exam Questions

2 mins2 questions
11 mark

Which of the following is an example of primary succession?

  • Re-growth of vegetation in a forest after a wildfire

  • Formation of a new ecosystem on bare rock after a volcanic eruption

  • Development of a new grassland after the clearing of farmland

  • The regrowth of coral reefs after a bleaching event

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21 mark

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

  • A family of sea otters that control sea urchin populations in a kelp forest

  • Flies that feed on decaying organic material

  • Grasses that dominate prairies and savannas

  • Deer that consume vegetation in forests

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