Botany-Food Chains & Webs

NEET Botany Food Chains & Webs MCQ Question

Type: MCQ-numerical-Hard-Class 12

If the Gross Primary Productivity (GPP) of a terrestrial ecosystem is 1000 kcal m⁻² yr⁻¹ and the respiration losses (R) are 400 kcal m⁻² yr⁻¹, what is the Net Primary Productivity (NPP) of this ecosystem?

A

600 kcal m⁻² yr⁻¹

B

1400 kcal m⁻² yr⁻¹

C

400 kcal m⁻² yr⁻¹

D

1000 kcal m⁻² yr⁻¹

Correct Answer

Option A

Detailed Explanation

Net Primary Productivity (NPP) is calculated by subtracting respiration losses (R) from Gross Primary Productivity (GPP). Therefore, NPP = GPP - R = 1000 - 400 = 600 kcal m⁻² yr⁻¹.

Found an issue with this question?