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Biology

Light and Dark reactions

In Class 11 Biology, this topic explains the two coordinated stages of photosynthesis in higher plants. Students learn how light-dependent reactions occur in the thylakoid membranes, where chlorophyll captures light energy to produce ATP and NADPH, and how the Calvin cycle takes place in the stroma. The topic covers carbon dioxide fixation, reduction, regeneration of RuBP, and the role of these reactions in forming carbohydrates. It also clarifies why “dark reactions” do not necessarily require darkness.

Easy · Level 1 · 1 questions

Practice questions

01Which gas is used by green plants during photosynthesis?

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Answer and explanation

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