Vascular plants rely on differences in osmotic pressure to export sugars from regions of synthesis (mature leaves) to sugar sinks (roots, fruits). In this process, known as Münch pressure flow, the ...

In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels.

The phloem moves food substances that the plant has produced by photosynthesis to where they are needed for processes such as: Transport of substances in the phloem is called translocation. Phloem ...