2.2 Comparison of xylem and phloem transport o 2. 2. 1 Some generalizations and useful comparisons can be o made about the composition of xylem and phloem exudates2.2 Comparison of xylem and phloem transport ⚫ 2.2.1 Some generalizations and useful comparisons can be ⚫ made about the composition of xylem and phloem exudates