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 loss (R) is 500 kcal m–2 yr–1, what is the net primary productivity (NPP) of this ecosystem?
1500 kcal m–2 yr–1
2500 kcal m–2 yr–1
500 kcal m–2 yr–1
2000 kcal m–2 yr–1
Correct Answer
Detailed Explanation
NPP is calculated by subtracting the respiration losses (R) from GPP. Thus, 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...