NEET Botany Ecosystem Components MCQ Question
If the Gross Primary Productivity (GPP) of an ecosystem is 4000 kcal m – 2 yr – 1 and the respiration loss (R) is 1500 kcal m – 2 yr – 1, what is the Net Primary Productivity (NPP) of this ecosystem?
2500 kcal m – 2 yr – 1
5500 kcal m – 2 yr – 1
1500 kcal m – 2 yr – 1
4000 kcal m – 2 yr – 1
Correct Answer
Detailed Explanation
The Net Primary Productivity (NPP) is calculated by subtracting the respiration loss (R) from the Gross Primary Productivity (GPP): NPP = GPP - R. Thus, NPP = 4000 kcal m – 2 yr – 1 - 1500 kcal m – 2 yr – 1 = 2500 kcal m – 2 yr – 1.
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