Why alcohol is not heated directly when we test the presence of starch in leaves?
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alcohol is not heated directly when we test the presence of starch in leaves becoz leaf direct heat can damage the cells of the leaf.
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The green leaf is boiled in alcohol not directly heated on flame during the testing for starch. This is because heating the green leaf directly on the flame, or boiling it in water will kill the leaf as the direct heat will damage the cells of the leaf. ... Then the leaf can be tested for presence of starch.
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