1)pluck the leaf to be tested and boil it in water to kill the cells.
2)after that boil it in methylated spirit.it will become hard and brittle.
3)after that again boil it in water for sometime to make it soft
4)then spread the leaf carefully in a dish and pour iodine sol. over it.
5)the parts having starch will turn blue-black and those which do not have starch will turn brown
catercousin10 26 days ago