Analyze the following picture and answer the questions 1) Explain the use of ethanol in step 2 of the experiment 2) Explain what happened to the color of the leaf which contains starch and the leaf contains no starch in step 4 when we add the iodine 3) Explain why we boil the ethanol in water bath not directly to the flame 4) discuss why plants store extra glucose as starch not as glucose ?
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Explanation:
Starch testing
Iodine solution is used to test leaves for the presence of starch. add the leaf to boiling ethanol in a water bath for a few minutes (the boiling ethanol dissolves the chlorophyll and removes the green colour from the leaf - it turns white so it is easy to see the change in colour)
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Explanation:
Starch testing
Iodine solution is used to test leaves for the presence of starch. add the leaf to boiling ethanol in a water bath for a few minutes (the boiling ethanol dissolves the chlorophyll and removes the green colour from the leaf - it turns white so it is easy to see the change in colour)
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