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Which of the following lists the events of the light reaction?

(a) light absorption, CO₂ fixation, triose formation, sugar formation Your answer
(b) glycolysis, Krebs cycle, electron transport, ATP formation Your answer
(c) light absorption, water splitting, O₂ release, ATP and NADPH formation Correct
(d) carboxylation of RuBP, reduction of PGA, regeneration of RuBP Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

The light reaction includes light absorption, water splitting, release of O₂, and formation of ATP and NADPH.

Why the other options are wrong

(a) · your answer CO₂ fixation and sugar formation belong to the Calvin cycle.
(b) · your answer These are the stages of respiration.
(d) · your answer These are the stages of the Calvin cycle.

NCERT point: The light reaction is also called the photochemical phase.

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