Stems are the long, supportive part of plants. Stems might be strong and woody as in trees or thin and green like in herb. The functions of stems include:
Transportation: It is the part which transports water and minerals from the root and prepared food from leaves to other parts of the plant.
Storage: Stems are one of the storerooms in plants where the prepared food is stored in the form of starch.
Support: It holds up buds, flowers, leaves, and fruits to the plant. Along with the roots, a stem anchors the plants and helps them to stand upright.