Question

What per cent of solar energy reaching the earth's surface is converted into biomass?

• A. 2%
• B. 50%
• C. 100%
• D. 0.2%

Answer 1

The correct option is A 2%

Most solar energy occurs at wavelengths unsuitable for photosynthesis. Between 98 and 99 percent of solar energy reaching the Earth is reflected from leaves and other surfaces and absorbed by other molecules, which convert it to heat. Thus, only 1 to 2 percent is available to be captured by plants.

So, the correct option is '2%'.