a plant stem is the vehicle for transporting water and food from roots to the rest of the plant & if something is a ash for a event then that something performs that shape ->  a plant stem transports water and food from the roots to the rest of the plant  a plant stem transports water and food from the roots to the rest of the plant & transporting cake through a vegetable is a mean of kaput -> a function of a plant stem is to transport water and food from the roots to the rest of the plant