The rate of photosynthesis is higher in

Options

(a) very high light
(b) continuous light
(c) red light
(d) green light

Correct Answer:

red light

Explanation:

The range of photosynthetically active radiation (PAR) lies between 400-700 nm. In light spectrum blue and red regions are most effective in photosynthesis. Blue wavelengths of light carry more energy while red wavelengths have lesser energy. Therefore, the most efficient wavelenths of light effective in photosynthesis are those or red light. Green light is the least effective in photosynthesis.