35. What is the relationship of phloem and xylem in the stem cross section?
Xylem cells are always towards the center and phloem cells are always on the outside. Key: A - Phloem cells (Sieve tube) B. Companion Cell; C Phloem sugar flow upwards or Down (always on the outside) D - Xylem cell (water and nutrients flowing up) E - Xylem cell reinforced with spirals of cellulose to endure the water pressure on the inside.
