Which of the following is the unit of productivity of an ecosystem?

Question

Professor PC Thomas Classes · Answer

(b) : Productivity refers to the rate of biomass production per unit area over a time period by plants, i.e., the rate at which sunlight is accumulated by producers for the synthesis of energy rich organic compounds and is expressed in terms of ( $\mathrm{Kcal} \mathrm{m}^{-2}$ ) $\mathrm{yr}^{-1}$ (measured in terms of energy) or $\mathrm{gm}^{-2} \mathrm{yr}^{-1}$ (measured in terms of weight).