Two groups (A and B) or bean plants of similar size and same leaf area were placed, in identical conditions. Group A was exposed to light of wavelength 400-450 nm and Group B to light of wavelength of 500-550 nm. Compare the photosynthetic rate of the two groups giving reason.
Group A will show more photosynthesis. Chlorophyll absorbs maximum light in the blue region of the spectrum, i.e., 400-450 nm and hence, photosynthetic rate will also he high. Group B will show negligible amount of photosynthesis or no photosynthesis. Chlorophyll does not absorb any light in the green region, i.e., 500-550 nm, but reflects green.