Question

______________ of the solar energy reaching Earth’s surface ends up as net primary productivity.

• A. 10%
• B. 90%
• C. 50%
• D. 1%

Answer 1

The correct option is D 1%

Plants typically capture and convert about 1.3-1.6% of the solar energy that reaches Earth’s surface and use about a quarter of the captured energy for metabolism and maintenance. So, around 1% of the solar energy reaching Earth’s surface (per unit area and time) ends up as Net Primary Productivity.