Which statement best describes xylem functions?

• A. Xylem transports water and nutrients, store food and water and provide support for the tree
• B. Xylem transports sugars from leaves to roots
• C. Xylem produces bark
• D. Xylem stores pigments

Answer: (A)

Xylem’s main job is to move water and dissolved minerals from the roots upward to the rest of the plant, and its thick, lignified walls provide strong structural support so the plant can stand upright. That combination—upward transport and sturdy, supportive tissue—is what xylem predominantly does. The statement that xylem transports sugars from leaves to roots describes phloem, which handles sugar transport. The idea that xylem produces bark isn’t correct because bark includes tissues outside the vascular system, such as phloem and cork. Storing pigments isn’t a primary function of xylem either. Some xylem parenchyma cells can store certain substances, but the essential roles are transport of water/minerals and structural support, which is why this option best fits xylem functions.