The tissue whose cells form long tubes and conduct water and mineral salts is called xylem. Here's a more detailed explanation:Xylem's Function:Xylem is a type of vascular tissue in plants responsible for transporting water and dissolved minerals from the roots to the rest of the plant. Long Tubes:Xylem tissue is composed of specialized cells, including tracheids and vessel elements, that form continuous tubes, allowing for efficient water transport. Other Functions:Besides water and mineral transport, xylem also provides structural support to the plant. Xylem vs PhloemXylem and phloem are the two main types of transport tissue in vascular plants, with phloem being responsible for transporting sugars and other organic compounds