The thirst one is salt exclusion. This is where the roots and some parts of the lower stem exclusde salt from entering the plant. However, not all salt is excluded. The salt that has been collected gets secreted by a passive process through the leaves (secretion). Similarly, the plants may accumulate the salt in a leave and drop it off.Buiboi said:
hahahahahLodgic said:Heres some info to ensure ur infomration is adequate:
Mangroves
Are halophytes, able to live in high salinity that are usually fatal to plants. Tolerate some salt in their sap and have mechanisms to reduce the concentration of salt in their tissues. These include:
Exclusion of salt - the endodermis in roots forms a barrier against the passage of most salt into xylem tissue so the xylem contains reasonably fresh desalinated water.
Accumulation of salt - Mangroves that have a relatively low salt concentration in the xylem fluid are salt accumulators. They accumulate excess salt in bark and leaves and this is lost from the mangrove when leaves fall.
Secretion of salt - Mangroves with higher levels of salt in their xylem fluid are salt secretors. They secrete salt solution through secretory glands on their leaf surfaces. The salt crystallises when evaporation occurs and is blown or washed away.
... P.S ms beattie is ko0l =]] LOLoh i no i didLodgic said:
