Question
Biology Question on Photosynthesis in higher plants
The rate of photosynthesis is higher in
A
very high light
B
continuous light
C
red light
D
green light.
Answer
red light
Explanation
Solution
Plants can use a small portion of light which falls upon them. Chlorophyll-a and chlorophyll-b absorb too much light in the blue and red region. Carotenoids absorb light mostly in the blue region of spectrum of light. In monochromatic lights, maximum photosynthesis occurs in red light, followed by blue light and poor photosynthesis in green light. Under very high light intensity solarization phenomenon occurs. It involves photo-oxidation of different cellular components including chlorophyll.