CUET UG Ecology and Environment MCQ Practice

Gross Primary Productivity (GPP) is the total amount of organic matter (or energy) produced by green plants through photosynthesis in a given area and time.

Plants use a part of this energy for their own metabolic activities, known as Respiration (R).

The energy that remains after respiration is stored as plant biomass and is called Net Primary Productivity (NPP).

Therefore, the relationship is: GPP − R = NPP