Class 11 NEET Biology Photosynthesis in Higher Plants

(b) : Wavelengths between 400 and 700nm which comprise the visible range of electromagnetic spectrum are capable of causing photosynthesis. These are called photosynthetically active radiations. Chlorophyll a and b absorb too much light in the blue and red region of spectrum of light. Carotenoids mostly absorb is the blue region of the spectrum.