xylem vs phloem
Definitions
noun
- the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels
Examples
Xylem and xylem parenchyma can be recognized in the centre of the taproot surrounded by a ring of meristematic tissue with very high intensity.
Xylem vessels, the vascular tubes responsible for water transport throughout the plant, are formed by tracheary elements.
Slide 12: F F F F ก 40x xylem parenchyma epidermis collenchyma chlorenchyma
Definitions
noun
- (botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed; consists primarily of sieve tubes
Examples
Young axes have higher values of structural Young's modulus than do older stages and this is reflected by the presence of fibre tissues, primary phloem fibres and collenchyma placed near the periphery of young axes.
In vascular plant biology, electro-osmosis is also used as an alternative or supplemental explanation for the movement of polar liquids via the phloem.
—In autumn, with a great creaking and a snapping of twigs, they break away from trunks grown thick with bark and phloem, which become husks with jagged tips, or later often topple from sheer grief.
