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NEET2023BotanyEcosystemActual

In the equation GPP - R = NPP GPP is Gross Primary Productivity NPP is Net Primary Productivity R here is :

Options

  1. AReproductive allocation
  2. BPhotosynthetically active radiation
  3. CRespiratory quotient
  4. DRespiratory loss

Correct answer

D. Respiratory loss

Step-by-step solution

Gross primary productivity of an ecosystem is the rate of production of organic matter during photosynthesis. A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiration losses (R), is the net primary productivity (NPP). GPP   =   NPP   +   R or GPP   -   R   =   NPP The Net primary productivity (NPP) is the available biomass for the consumption to heterotroph (herbivores and decomposers).

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