Question: how are xylem and phloem arranged in the stem?
Answer: Xylem and phloem in stems In eudicots, vascular bundles are arranged in a ring within the stem. Each vascular bundle is orientated with the xylem on the interior and the phloem on the outside of the xylem. In monocots, the vascular bundles are scattered throughout the stem rather than being arranged in a circle.