Question

Why is it important to spread the leaf out on a white tine and not a colored one? In the Test for Starch Experiment.

Answer 1

Answer:

Explain the significance of boiling the leaf in water.

Removes the waxy cuticle which prevents entry of iodine/potassium iodide solution. Ruptures cell membranes to make starch granules in cytoplasm and chloroplasts accessible to iodine/potassium iodide solution.

Answer 2

Answer:

It is important to spread the leaf out on a white tile and not a coloured one as:

Explanation:Removes the waxy cuticle which prevents entry of iodine/potassium iodide solution. Ruptures cell membranes to make starch granules in cytoplasm and chloroplasts accessible to iodine/potassium iodide solution