Question

The rate at which light energy is converted into chemical energy in ecosystems:

• A. Net secondary productivity
• B. Gross primary productivity
• C. Net primary productivity
• D. Gross secondary productivity

Answer 1

The correct option is B

Gross primary productivity

Gross primary productivity or GPP is the rate at which energy is captured or organic matter synthesised by the producers per unit area and time. It is equivalent to total photosynthesis and indicates the capacity of producers to assimilate solar energy into living matter.