Question

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3. How would you test the presence of starch in leaves? according to class 7​

Answer 1

Explanation:

: A fresh leaf is taken. Step 2: The leaf is boiled in water for few minutes to soften the cells in the leaf. Step 3: Now, dip this leaf in iodine solution. Step 4: The color of the leaf will changes into blue black color when iodine is added to it which shows the presence of starch in it...............

Answer 2

Explanation:

Lugol's iodine solution can be used to detect the presence of carbohydrates. In the presence of certain carbohydrates like starch, the Lugol's iodine solution will change color from amber to a dark blue.