Community Ecology

AP Biology· difficulty 2/5

Bare rock Lichens Grasses Shrubs Forest Time

The sequence shown best illustrates which type of ecological succession?

  • A

    Primary succession (begins with no soil)

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  • B

    Climax succession

  • C

    Secondary succession

  • D

    Disturbance succession

Explanation

Primary succession begins on bare rock or lifeless substrate (no soil); pioneer species like lichens establish first.

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