Which of the following equations shows the relationship...

Which of the following equations shows the relationship between gross primary productivity (GPP) and net primary productivity $(\mathrm{NPP}) ?(\mathrm{a}) \mathrm{GPP}=\mathrm{NPP}-$ photosynthesis (b) $\mathrm{NPP}=\mathrm{GPP}-$ photosynthesis (c) $\mathrm{GPP}=$ NPP - plant respiration (d) $\mathrm{NPP}=$ GPP - plant respiration (e) $\mathrm{NPP}=\mathrm{GPP}-$ animal respiration.

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Key Concepts

Gross Primary Productivity (GPP)

GPP represents the total amount of energy captured via photosynthesis in an ecosystem, which includes all organic compounds produced by plants before any energy is used for metabolic activities. It is a measure of the overall capacity of an ecosystem to capture energy from sunlight.

Net Primary Productivity (NPP)

NPP is the amount of energy remaining after plants use part of the energy captured during photosynthesis for their own metabolic processes, primarily respiration. It represents the energy available for growth, reproduction, and consumption by other organisms, making it a crucial indicator of an ecosystem’s productivity.

Plant Respiration

Plant respiration is the process by which plants convert some of the sugars produced during photosynthesis into energy for maintenance, growth, and other metabolic activities. This process consumes a portion of the energy captured, thereby reducing the gross primary productivity to yield the net primary productivity.

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