Read the given statements and select the correct option.
Statement 1: Net primary productivity is less than the gross primary productivity.
Statement 2 : Net primary productivity is equal to the gross primary productivity minus the respiration losses.

Options

A. Both statements 1 and 2 are correct.
B. Statement 1 is correct but statement 2 is incorrect.
C. Statement 1 is incorrect but statement 2 is correct.
D. Both statement 1 and 2 are incorrect.

Answer

A

Explanation

Gross primary productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis. Net primary productivity (NPP) is the amount of organic matter stored by producers per unit area per unit time. Gross primary prodcutivity minus respiration losses is the net primary productivity i.e., NPP=GPP-R.