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Get Answers to all your Questions
Q.91) ------
Which of the following is the unit of productivity of an Ecosystem?
A) $(KCal, m^{-2}), yr^{-1}$
B) $gm^{-2}$
C) $KCal, m^{-2}$
D) $KCal, m^{-3}$
Answers (1)
Productivity in an ecosystem refers to the rate at which biomass or energy is produced per unit area per unit time. It is commonly expressed as gross primary productivity (GPP) or net primary productivity (NPP). Since it involves energy flow per unit area per unit time, the correct unit is kilocalories per square meter per year (KCal m−2 yr−1)\left(\text{KCal m}^{-2} \, \text{yr}^{-1}\right)(KCal m−2yr−1). Other units like g m−2\text{g m}^{-2}g m−2 refer to biomass, not productivity rate.
Hence, the correct answer is option(1)
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