What is the main function of xylem in a tree?

The main function of xylem in a tree is to convey water and minerals from the roots to the leaves and other parts of the plant. Xylem vessels are specialized tissues that are responsible for the upward movement of these essential resources, which are crucial for photosynthesis and overall plant health. The water transported by the xylem also helps to maintain turgor pressure, which is important for the rigidity and structural integrity of the plant.

While xylem does play a role in providing some structural support due to its lignified walls, which helps the tree maintain its shape and stand upright, the primary role revolves around the transport of water and nutrients. This distinguishes xylem from other plant tissues, such as phloem, which is responsible for transporting sugars produced through photosynthesis. Therefore, the focus on xylem's function is accurately centered on its role in water and mineral transportation.