During an experiment to show light is necessary for photosynthesis, after de-starching, we cover a leaf into three parts, each by red, green and black coloured paper. Will the three parts of leaf show starch test. If yes which part and why? If no, give reason.
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Explanation:
During the experiment, the uncovered portion received light and hence photosynthesis took place in this part. Because of this, starch is formed in the uncovered portion. This starch with iodine gives blue-black colour.
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