what do you conclude when white patches do not turn blue black on adding iodine solution ,,
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Answer: When a leaf is bleached with alcohol and drops of iodine are put on it, if it turns blue-black it means that the leaf contains starch and can perform photosynthesis. Photosynthesis is the process by which plants make food. If the leaf does not change into blue-black, it means that the leaf does not contain starch and cannot perform photosynthesis.
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