Population Ecology

AP Biology· difficulty 3/5

A "Type I" survivorship curve (most deaths late in life) is characteristic of

  • A

    Long-lived plants with high seedling mortality (oaks, conifers)

  • B

    Invertebrates with high offspring numbers (insects, marine larvae)

  • C

    Mammals with extensive parental care (humans, elephants)

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  • D

    Microorganisms with constant death rates (bacteria, archaea)

Explanation

Type I: high early survival, mortality concentrated in old age. Type II: constant rate (many birds). Type III: high early mortality (most invertebrates, fish).

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