Question

What wavelengths of the electromagnetic spectrum are utilized by plants for the purpose of photosynthesis?

Answer 1

Almost all of the visible spectrum.

Explanation:

The region of light that affects photosynthesis is called photosynthetically active radiation(PAR). It ranges from 400 to 700 nm . Plants also use other lights outside of PAR for photomorphogenesis which is the light regulated changes in development, morphology etc.