Question

Identify the correct option:

Given graph represents the absorption spectra of three 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 the absorption spectrum.
• B. Chl a and chl b absorb maximum light in the blue and red wavelengths of light
• C. Rate of photosynthesis is maximum in blue and red wavelengths 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 wavelengths 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 wavelength. The pigments are often known after the wavelength which is absorbed to the maximum,

e.g. $Chl{a}_{673},Chl{a}_{683}\left(P_{680}\right),Chl{a}_{703}\left(P_{700}\right).$

So the correct answer is 'All of these'.