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B
Chemical breakdown of water.
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C
Fixation of carbon.
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D
Production of oxygen gas.
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E
Absorption of light energy.
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Solution
The correct option is B Fixation of carbon. The Calvin cycle, Calvin cycle, or reductive pentose phosphate cycle is also known as the C3 cycle a series of biochemical redox reactions that take place in the stroma of the chloroplasts during photosynthesis. These reactions are also known as light-independent reactions. While the light dependent reactions of photosynthesis capture the energy of light and use it to make the energy storage and transport molecules ATP and NADPH, the light-independent reaction or the Calvin cycle uses the energy from short-lived electronically excited carriers and converts carbon dioxide and water into organic compounds that can be used by the organisms. The fixation of carbon is one of the main functions of the Calvin cycle.