For example, a peripheral neuropathy caused by a vitamin deficiency can be treated -- even reversed -- with vitamin therapy and an improved diet. Likewise, nerve damage brought on by alcohol abuse can often be stopped and improved by avoiding alcohol.
2. Vascular tissue - xylem and phloem in leaves form in strands called veins. Xylem forms on the upper side of a vein (on a vertical leaf, on the side next to the stem), and phloem on the lower side (side away from the stem). a. Veins are like a leaf's fingerprint and can be used to identify plants.
In addition to the number of. seed leaves, leaf veins and floral parts help to separate. monocots from dicots (Figure 2). Monocots have leaf. veins that form a parallel pattern, for example the veins. on a blade of grass. Dicots have leaf veins that form. a net pattern.