Q. Building of biomass or storage of energy by green plants in a unit time and area is called
A) Productivity
B) Net primary productivity
C) Gross primary productivity
D) Primary productivity
Explanation
Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume for unit time. It is given by NPP = GPP – R (Gross Primary Productivity) where, R = Respiration losses. It is utilised by hetertrophs
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.