The leaf on the right shows a positive test for starch in the areas which contained chlorophyll, and a negative test for starch in the areas which lack chlorophyll. This is evidence that ...

The investigations were made with the object of determining the formation and disappearance of starch in the leaves of plants ... of the now well-known iodine test, a modification of which was ...

We can investigate the limiting factors of photosynthesis by placing leaves in different ... to blue-black in the presence of starch, so we can use iodine to test if starch is produced in ...