AICE GPP Understanding Ecosystem Productivity

Which of the following factors is most likely to directly affect the gross primary productivity (GPP) of an ecosystem?

• The amount of sunlight available

• The number of herbivores present

• The diversity of animal species

• The presence of decomposers

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NGSS.HS-LS2-4

NGSS.HS-LS2-5

In an ecosystem, energy flow is primarily initiated by which of the following processes?

• Decomposition of organic matter

• Photosynthesis by producers

• Respiration by consumers

• Predation among carnivores

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NGSS.HS-LS1-5

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How does net primary productivity (NPP) differ from gross primary productivity (GPP) in an ecosystem?

• NPP includes the energy used by producers for respiration, while GPP does not.

• NPP is the total energy captured by producers, while GPP is the energy available to consumers.

• NPP is the energy available to consumers after producers have used some for respiration, while GPP is the total energy captured by producers.

• NPP and GPP are the same, with no differences.

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NGSS.HS-LS1-5

NGSS.HS-LS2-4

Which of the following equations correctly represents the relationship between GPP, NPP, and respiration (R) in an ecosystem?

• All of the above

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NGSS.HS-LS2-4

If an ecosystem has a high net primary productivity, what can be inferred about its energy flow?

• The ecosystem has a low rate of photosynthesis.

• The ecosystem has a high rate of energy loss through respiration.

• The ecosystem has a high rate of energy transfer to consumers.

• The ecosystem has a low biodiversity.

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NGSS.HS-LS2-3

NGSS.HS-LS2-4

NGSS.HS-LS2-5