(a) Pulmonary artery
(b) It is so because arteries carry blood away from the heart.
(a) Pulmonary artery
(b) It is so because arteries carry blood away from the heart.
| root hairs | Xylem | Urethra |
| arteries | Kidneys | Veins |
| atria | Capillaries | Heart |
| ureter | Phloem | Urinary bladder |