How is the position of the vascular tissue in roots different from the position of vascular tissue in stems? Solution vascular plants contain two main type of conductive tissue xylem and pholem. xylem for the conduction of water with dissolved mineral matters, and phloem for the conduction of elaborated food matters in solution. xylem and phloem function in the conduction of water, minerals, and nutrients throughout the plant, it is not surprising that their form should be similar to pipes. herbaceous stems, the vascular tissues are contained in bundles; these bundles sit relatively near the surface of the stem. In roots, the vascular tissues form a central core—a location where they\'re protected from the harsh activity of pushing through soil. (We are referring to young, non-woody tissues.).