Which pigment is mainly responsible for absorbing light in photosynthesis?
Answer and explanation
Correct answer: C. Chlorophyll
- Step 1: Oxygenic photosynthesis in plants relies on thylakoid membrane pigment-protein complexes to absorb photons and transfer excitation energy.
- Step 2: Chlorophyll (specifically Chlorophyll a, the primary reaction centre pigment) is the essential photosynthetic pigment that drives the light reactions of photosynthesis.
Answer
Chlorophyll.
Why not the others: 'Carotene' and 'Xanthophyll' are accessory carotenoid pigments that absorb blue-green light and protect against photo-oxidation; 'Anthocyanin' is a vacuolar flavonoid pigment providing red/purple colour to petals and fruits without participating in photosynthetic electron transport.
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