2.5 Zonation, succession and change in ecosystems

2.5 Zonation, succession and change in ecosystems Quiz

IB Environmental Systems and Societies HL: Quiz

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5 questions, one answer each

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  1. 1. Succession on land exposed by a retreating glacier is:

    • A. Secondary
    • B. Primary
    • C. Climax
    • D. Plagioclimax

  2. 2. HL: Which organism is likely to be an r-strategist?

    • A. Oak tree
    • B. Dandelion
    • C. Elephant
    • D. Beech

  3. 3. HL: As a succession reaches climax, net productivity as a share of gross productivity:

    • A. Rises
    • B. Falls
    • C. Is constant
    • D. Becomes negative always

  4. 4. A transect across sand dunes shows:

    • A. Zonation
    • B. Biomagnification
    • C. Sequestration
    • D. Tipping points

  5. 5. HL: A community held below the climax by grazing and burning is a:

    • A. Pioneer community
    • B. Plagioclimax
    • C. Sere only
    • D. Primary succession

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