why has the yellow region of the leaf not produced sugar.
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Explanation:
The parts without chlorophyll do not photosynthesise, and so they do not make starch and the iodine does not change colour. ... The green parts contain chlorophyll and photosynthesise to make starch. The white part of the leaf does not contain chlorophyll, so does not photosynthesise.
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Answer:
The parts without chlorophyll do not photosynthesise, and so they do not make starch and the iodine does not change colour. ... The green parts contain chlorophyll and photosynthesise to make starch. The white part of the leaf does not contain chlorophyll, so does not photosynthesise.
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