STEPS TO TEST PRESENCE OF STARCH IN THE LEAF

1. Boil pieces of leaves in a beaker of water TO KILL THE CELLS AND BREAK THE WALL OF LEAF CELL



Fresh leaves

Boiling the leaves

2. Heat the pieces of leaf in alcohol for few minutes TO REMOVE CHLOROPHYLL

Alcohol turns to green color- chlorophyll is removed



3. Soak the pieces of leaf in hot water for a little while TO SOFTEN THE LEAF




4. Using a dropper, add a few drops of iodine solution onto the pieces of leaf TO TEST FOR STARCH

STUDENTS OBSERVING THE LEAVES



LEAVES THAT CONTAINS STARCH TURN TO DARK BLUE COLOUR