Experiment to test the presence of starch in leaves: i. Take two healthy green potted plants of the same type. ii. Keep one potted plants in a dark room for one or two days in order to remove all the starch from the leaves. iii. Keep the other plant in sunlight. iv. Now, take one leaf from each potted plant and put a few drops of iodine solution on them. v. Note down the change in the color of both the leaves. vi. We notice that the leaf which was kept in dark room does not react to iodine test;where as the leaf which received sunlight turn into bluish black,as it contain starch.