Multiple choice Wilting of the plant occurs when xylem is blocked phloem is blocked both xylem and phloem are blocked a few roots are removed Reveal answer Fill a bubble to check yourself A Correct answer Explanation Xylem tissue is involved in water conducting system of plants; so if it is blocked, the plant will show wilting. The process of wilting modifies the leaf angle distribution of the plant (or canopy) towards more erectophile conditions.