Dear Zian, Chlorophyll determines the intensity of photosynthesis that produces glucose. Glucose is stored in plant cells in the form of starch. Chlorophyll and and starch are separated in space. Chlorophyll is a component of special membrane structures (thylakoids) in chloroplasts. Starch is stored in a chloroplast stroma. It can be easily determined using iodine that binds with starch granules making them purple while chlorophyll is green.
How can u compare the distribution of starch and the distribution of chlorophyll?