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Solution


Q.

Which of the following is the unit of productivity of an Ecosystem               [2025]
1 gm–2  
2 KCal m–2  
3 KCal m–3  
4 (KCal m–2)yr–1  

Ans.

(4)

The rate of biomass production is called productivity. It is expressed in terms of gm–2yr–1 or (KCal m–2)yr–1 to compare the productivity of different ecosystems.