NEET Botany Ecosystem Components MCQ Question
If the gross primary productivity (GPP) of an ecosystem is 2000 kcal m – 2 yr – 1 and the respiration losses (R) are 500 kcal m – 2 yr – 1, what is the net primary productivity (NPP)?
1500 kcal m – 2 yr – 1
2500 kcal m – 2 yr – 1
2000 kcal m – 2 yr – 1
1000 kcal m – 2 yr – 1
Correct Answer
Detailed Explanation
Net primary productivity (NPP) is calculated by subtracting respiration losses (R) from gross primary productivity (GPP). Here, NPP = GPP - R = 2000 - 500 = 1500 kcal m – 2 yr – 1.
Found an issue with this question?
Related Questions
More from Ecosystem Components
More from
Assertion (A): In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for energy flow. | Reason (R): The detritus food chain (DFC)...
Match Column-I with Column-II. Column-I Column-II (a) Producers (i) Saprotrophs (b) Primary Consumers (ii) Energy from Sun (c) Decompo...
Match Column-I with Column-II. Column-I Column-II (a) Grass (i) Primary Consumer (b) Goat (ii) Decomposer (c) Man (iii) P...