I learnt about plant dissection with my dad and did the starch test and talked about photosynthesis.
first we cut off a leaf from a geranium and stuffed it in a fat test tube then we pipetted meths into the tube and gave it a boiling water bath. That got rid of the chlorophyll. We put the leaf on a plate and used a pipette to put iodine solution on the leaf. It went black wich means there was starch in the leaf.
The starch is important because it means the pant has photosynthesized.