Question:medium

Choose the correct equation from the following options to show the correct relationship between Gross Primary Productivity (GPP), Respirational Losses (R), and Net Primary Productivity (NPP).

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Remember, NPP represents the energy available to the next trophic level, after subtracting the energy used for respiration.
Updated On: Mar 29, 2026
  • GPP = R / (NPP)²
  • GPP = 2NPP + R
  • GPP = NPP - R
  • GPP - R = NPP
Show Solution

The Correct Option is D

Solution and Explanation

The relationship between Gross Primary Production (GPP), Respiration (R), and Net Primary Production (NPP) is expressed as: \[ \text{GPP} - \text{R} = \text{NPP} \] In this equation:
- GPP represents the total energy captured by producers within an ecosystem.
- R signifies the energy consumed by producers for respiration.
- NPP denotes the energy remaining after respiration, available for growth and other metabolic processes.
Summary:
The accurate representation is (4) GPP - R = NPP.
Final Determination: \[ \boxed{\text{The correct equation is GPP - R = NPP.}} \]
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