AP Biology Population

How is secondary succession different from primary succession?

• Secondary succession occurs after a disturbance in an area that was previously uninhabited.

• Secondary succession occurs after a disturbance in an area in which the soil has remained intact.

Which of the following is classified as a freshwater aquatic life zone?

• oceans

• mangrove forests

• rivers

• coral reefs

• coastal wetlands

Why does increasing producers increase the populations of all trophic levels?

• Producers increase the size of a habitat

• Producers help keep predator populations in check

• With more energy available the carrying capacity increases

• Producers do not have a large impact on population sizes

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NGSS.MS-LS2-1

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Which point on the graph represents carrying capacity?

• A

• B

• C

• D

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Which letter shows the the exponential growth of a population?

• A

• B

• C

• D

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NGSS.HS-LS2-2

Refer to the diagram of the survivorship curve.
Which curve best describes an organism that invests a lot of energy in parenting?

• A

• B

• C

• this is not a survivorship curve

What causes trophic cascades?

• Increasing the number of producers

• Pollution

• The removal of a keystone species

• Introducing a new species to an ecosystem

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What are limiting factors?

• The maximum number of organisms an area can sustain

• Scarce resources that limit the size of a population

• Conditions that limit how much energy flows to the next trophic level

• How diverse the populations of a community are

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If the producer level of an ecosystem has 750,000 J of energy, how much energy would be passed on to the secondary consumers?

• 75,000 J

• 7,500 J

• 750 J

• 75 J

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What does carrying capacity mean?

• The amount of abiotic factors present in the environment

• The total number of species living in an ecosystem

• The number of offspring one mother can have in a year

• The number of organisms an ecosystem can sustain

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