Pressure Flow
The leaves prepare glucose, which is then transformed into sugar.
- Active transport is used to carry the sucrose-containing sugar from the companion cells into the phloem sieve tube cells, which are still alive.
- The phloem becomes hypertonic as a result of this.
- Endosmosis is the process by which water in xylem vessels close to the phloem travels.
- Phloem SAP travels from a location with higher osmotic pressure to an area with low pressure as osmotic pressure rises.
- At the sink, osmotic pressure is kept to a minimum.
- Once more, active transport is needed at the sink to get the sugar from the phloem SAP into the cell, where it is used to produce energy during respiration.
Phloem Transport
In plants, transportation is an important process. From roots to the tips of their leaves, plants carry the water and nutrients which are required to survive. The water and minerals are transported in plants by:
- Phloem
- Xylem
Xylem and phloem tissues are present all over the plants. These conducting tissues grow from the roots of trees and ascend through the trunks. Like spider webs, they eventually branch off into the branches and spread even more into every leaf.