What is the role of ethyl alcohol used in experiment to prove that chlorophyll is essential for photosynthesis?
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Describe an experiment to show that chlorophyll is necessary for photosynthesis
In this experimental leaf, the part of the variegated leaf which contain green patches will give a positive test for starch i.e. iodine when added to this part of the leaf will turn into blue-black color. ... Thus this experiment proves chlorophyll is necessary for leaves to prepare starch through photosynthesis.
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The role of ethyl alcohol or ethanol is to decolourise the leaf or remove chlorophyll from the leaves. This would help in the carrying out of the other steps in this experiment.
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