| In freezing xylem, gas bubbles are formed because air is not soluble in ice. |
| The exit of this xylem water, termed guttation, results in the formation of small droplets in the vicinity of the hydathodes. |
| It possessed secondary xylem and secondary phloem, which were produced by a bifacial vascular cambium with ray and fusiform initials. |
| Inside of this zone, undifferentiated xylem cells without secondary walls proliferated through mitotic activity. |
| Graniferous tracheary elements are restricted to the haustorium and occur most frequently in the plate xylem. |
| Xylem and xylem parenchyma can be recognized in the centre of the taproot surrounded by a ring of meristematic tissue with very high intensity. |
