Wednesday, April 16, 2008
Testing plants for photosynthesis
As one of experiments this week we were looking at what would happen to geranium leaves if we put a piece of tin foil across and blocked the sun getting to the leaf. After a week we tested the leaf for the presence of starch (stained black by iodine). You can see a couple of amazing results where the foil prevented the leaf from carrying out photosynthesis and storing the products as starch...pretty convincing experiment!