Some plants adapt to the underground stem modification system, where the stem that derived from stem tissue exists under the soil surface. These underground stems play several roles such as food and nutrients storage tissue, production of new clones, and in survival from one growing season to the other (perennation). Types of underground stem include bulbs, corms, rhizomes, stolons, and tubers.
Potato or tubers is a modified stem that stores food. Axillary buds arise from the node region of potato. Sprouts arise from potato is known as buds or eyes. Each potato has several buds.
In warmth and moisture conditions, they begin to sprout and entire stems are formed with the root at the base and leaves at the top.
