The amount of organic matter stored by green | vedclass

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(D) Primary productivity is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthes

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Primary productivity

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(D) Primary productivity is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis. Specifically,the amount of organic matter stored by green plants in a unit time and area is referred to as Primary productivity. It is expressed in terms of weight $(g^{-2} yr^{-1})$ or energy $(kcal m^{-2} yr^{-1})$. Gross Primary Productivity $(GPP)$ is the total rate of production of organic matter during photosynthesis,while Net Primary Productivity $(NPP)$ is the $GPP$ minus respiration losses $(R)$,i.e.,$NPP = GPP - R$.

The amount of organic matter stored by green plants in a unit time and area is called

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