In a sunflower root xylem and phloem are arranged in a total of

Roots of sunflower show tetrarch condition which implies that there four radial patches of xylem alternating with four radial groups of phloem. i.e. a total of eight radial rows. Monarch condition shows one parch each of xylem and phloem, Diarch condition two phloem and xylem patches and Triarch condition three phloem and xylem patches.