APES 1.8

If gross primary productivity in a wetland is 3 kg C/m²/year and respiration is 1.5 kg C/m²/year, what is the net Primary Productivity of the wetland?

• 1.5 kg C/m²/year

• 2 kg C/m²/year

• 3 kg C/m²/year

• 4.5 kg C/m²/year

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

The gross primary productivity of an ecosystem is?

• the total amount of biomass.

• the total energy captured by photosynthesis.

• the energy captured after accounting for respiration

• the energy available to primary consumers.

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Producers rely on _____ to convert solar energy to chemical energy. Consumers and producers rely on ____ to release chemical energy.

• Cellular Respiration; photosynthesis

• Cellular Respiration; cellular respiration

• photosynthesis; cellular respiration

• photosynthesis; photosynthesis

The rate at which photosynthetic primary producers incorporate energy from the sun is called

• Gross Primary Production
• Photosynthetic Primary Production
• Net Primary Production
• Primary Production

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

How to calculate Net Primary Production:

• (GPP)(respiration)=NPP
• GPP/respiration=NPP
• GPP+respiration=NPP
• GPP-respiration=NPP

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which two terrestrial ecosystems have the HIGHEST NPP?

• Swamp/marsh and tropical rainforest

• coral reef and boreal forest

• temperate grasslands and savannah

• open ocean and freshwater lakes

If gross primary productivity is 5 gC/m²yr, and the producers need 1.5 gC/m²yr for their own respiration, what is the net primary productivity?

• 3.5 gC/m²yr

• 6.5 gC/m²yr

• -3.5 gC/m²yr

• 7.5 gC/m²yr

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

The GPP of a certain producer is 5,000 gC/m²yr and the NPP is 4,000 gC/m²yr. What is the repsiratory energy needed by the autotrophs?

• cannot be determined from the information given

• 1,000 gC/m²yr

• 9,000 gC/m²yr

• -1,000 gC/m²yr

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

__________productivity = the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration).

• Gross
• Primary
• Net
• Secondary

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which ecosystem has the LOWEST NPP?

• Savanna

• Desert

• Tropical rain forest

• Taiga

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NGSS.MS-LS2-3

NGSS.MS-LS1-6