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How do we know that leaf has prepared starch |
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Answer» When you put IODINE on the leaves, ONE of them will turn blue-black and the other will be a reddish-brown. Iodine is an INDICATOR that turns blue-black in the presence of starch. The leaf that was in the LIGHT turns blue-black, which demonstrates that the leaf has been performing photosynthesis and producing starch. |
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