While you test for starch in leaf it become pale with alcohol. Write the cause
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because it removes or breaks the green pigment chlorophyll...
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When you test for starch in leaf it become pale with alcohol the main reason is:
● Alcohol reacts with the chlorophyll present in the leaf and decolourises it taking out the green colour.
● Then such decolourised leaf when comes in contact with Iodine turns to blue and black Or red colour.
● Occurrence of blue black colour indicates the presence of starch.
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