Question
Write the differences between
(i) Xylem and Phloem. $\quad$ (ii) Arteries and Veins
(i) Xylem and Phloem. $\quad$ (ii) Arteries and Veins
| ylem | Phloem |
| 1.Transports water and minerals from roots to other parts of the plant. | 1.Transports food (mainly sugars) from leaves to other parts of the plant. |
| 2.Flow is unidirectional (upward). | 2.Flow is bidirectional (up and down). |
| 3.Made of tracheids, vessels, xylem fibers, and xylem parenchyma. | 3.Made of sieve tubes, companion cells, phloem fibers, and phloem parenchyma. |
| Arteries | Veins |
| 1.Carry blood away from the heart. | 1.Carry blood towards the heart. |
| 2.Blood is usually oxygen-rich (except pulmonary artery). | 2.Blood is usually oxygen-poor (except pulmonary vein). |
| 3.Have thick, muscular walls to withstand high pressure. | 3.Have thin walls and valves to prevent backflow. |
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