osmosis: take a yam tuber,divide it into two and bore a little hole at the center.fill a beaker with water,and place the yam you cut inside the water , and a little quantity of sugar into the hole you dug at the middle of the yam. let the experiment stand for 6 hours then you will notice that the water has risenĀ  into the yam tuber thereby dissolving the sugar at the middle of the yam.