I was tested on the Carbon Dioxide pH experiment where you blow into a straw and into the water with uni indicator, Drawing Xylem and Phloem and Estimating the size of a pollen grain using the microscope and calculating. They love to give you Xylem and Phloem to draw at longitudinal sections and I'd say that's one of the things you'll be tested on. They may throw something in about the kidney, like naming the certain parts and functions?