Jack picked a leaf from a plant that was kept in dark for 3-4 days and did the starch test on it. The leaf did not turn blue-black after the test. This may have happened because:
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The leaf from a potted plant which was kept in a dark room for 24 hours when tested for starch will not turn blue-black (starch is tested with iodine which ...
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The given experiment proves that for photosynthesis, the presence of sunlight is an important factor which is absorbed by the chlorophyll (green ... More
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This happens because the leaf is now destarched(i.e., is free from starch).
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