Question

Given graph represents the absorption spectra of the photosynthetic pigments: Chl a, Chl b and beta–carotene.


Select the correct statement regarding this.

• A. The curve showing the amount of absorption of different wavelengths of light by a photosynthetic pigment is called as absorption spectrum
• B. Chl a and chl b absorb maximum light in blue and red wavelength of light
• C. Rate of photosynthesis is maximum in blue and red wavelength of light
• D. All of these

Answer 1

The correct option is D All of these

The graphical curve showing the amount of energy of different wavelength of light absorbed by a pigment is called absorption spectrum. It is studied with the help of spectrophotometer. The absorption spectra of chlorophylls a and b show that they absorb maximum light in the blue-violet and red wavelengths. The pigments are often known after the wavelength which is absorbed to the maximum. The rate of photosynthesis is maximum in blue and red wavelength of light.