70ᵗʰ B.P.S.C. (Pre) 2024
Which of the following the chlorophyll in photosynthesis is used for ?
aReduction of CO₂
bBreaking down water molecules
cNo function
dAbsorbing light✓ Correct
Explanation
Photosynthesis is the process by which green plants, in the presence of sunlight, form carbohydrates by the combination of water and carbon dioxide. In this process, oxygen is released as a by-product. Chlorophyll is a chemical photoreceptor (light-absorbing pigment) that captures light for photosynthesis in plants. It absorbs light mainly in the red (long wavelength) and blue (short wavelength) regions of the visible spectrum. Absorption of green light is very low, and <mark>the green light is reflected. That is why a plant appears green.</mark>
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