Only the parts that were green become blue/black with iodine solution ... so does not photosynthesise. The leaf on the right shows a positive test for starch in the areas which contained ...
7. Iodine is used to test for starch Liquid iodine is used in chemistry labs as a detector for starches. A solution of iodine and potassium iodide is dripped on to a substance and if it contains ...