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Question

Xanthophyll cycle plays role mainly in:

Options

Choose one · Correct answer highlighted

Explanation

Blue light sensing (B) is correct here. This is core STOMATA MOVEMENT: once you know the definition or pathway step, Blue light sensing is the clear fit. The wrong ones are A) CO₂ fixation; C) Respiration; D) Transpiration pull. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.