In the experiment "Light is essential for photosynthesis", why does the uncovered part of the leaf turn blue-black after putting iodine solution? [HOTS]
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Answer:
The uncovered part of the leaf exposed to sunlight performs photosynthesis and accumulates starch. Iodine reacts. with starch to give blue-black colouration.
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Starch is produced in the uncovered part of the leaf due to photosynthesis which turns blue-black in the presence of iodine solution.
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