NEET Botany Ecosystem Components MCQ Question
If an ecosystem has a Gross Primary Productivity (GPP) of 2000 kcal m⁻² yr⁻¹ and the respiration loss (R) is 600 kcal m⁻² yr⁻¹, what is the Net Primary Productivity (NPP) of the ecosystem?
1400 kcal m⁻² yr⁻¹
800 kcal m⁻² yr⁻¹
2600 kcal m⁻² yr⁻¹
2000 kcal m⁻² yr⁻¹
Correct Answer
Detailed Explanation
Net Primary Productivity (NPP) is calculated as GPP minus respiration losses (R). Given GPP is 2000 kcal m⁻² yr⁻¹ and R is 600 kcal m⁻² yr⁻¹, NPP = 2000 - 600 = 1400 kcal m⁻² yr⁻¹.
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