Community Ecology

AP Biology· difficulty 3/5

prey predator

The graph shows the classic Lotka-Volterra dynamics. The predator population peaks

  • A

    Slightly after the prey peak (responds to prey availability)

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  • B

    Slightly before the prey peak (anticipates prey availability)

  • C

    Simultaneously with the prey peak (tracks prey availability instantly)

  • D

    Independently of the prey peak (ignores prey availability entirely)

Explanation

Predator response lags prey: predators numerically increase only after prey are abundant, then crash as prey decline (and the cycle continues).

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