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    Question

    In plants, which one of the following gases is released

    during photosynthesis?
    A Carbon dioxide Correct Answer Incorrect Answer
    B Oxygen Correct Answer Incorrect Answer
    C Hydrogen Correct Answer Incorrect Answer
    D Methane Correct Answer Incorrect Answer

    Solution

    Oxygen (O ₂ ) is released as a by-product during photosynthesis. It is formed during the light-dependent reactions when water is split by photolysis. Information Booster:       

    1. Photosynthesis occurs in the chloroplasts.
    2. Water is split into oxygen, protons, and electrons during the light reaction.
    3. Oxygen is released through stomata.
    4. The reaction is catalyzed by sunlight and chlorophyll.

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