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CBSE Class 10 Answered

Please explain the activity in simple and detail.
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Asked by Vinaymehra.mehra | 02 Apr, 2018, 07:42: PM
answered-by-expert Expert Answer
Rinsing off the leaf in iodine solution turns the leaf colour blue-black colour which proves that there is the presence of starch. So, after the starch test, the green region of the leaf turns blue-black, while the non-green part of the leaf stains brown in colour.Only the green region of the leaf manufactures the starch. This proves that chlorophyll is necessary for photosynthesis.
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