herbaceous plants - 85-95% water
woody plants - 75-85% water
FUNCTIONS OF WATER
- dissolves solutes;
2) reagent - water is used in biochemical reactions, such as photosynthesis.
3) translocation medium - water translocates solutes in xylem and phloem.
water is very important in regulating temperature.
5) turgor pressure and growth
turgor pressure -
the positive pressure inside of cells due to water uptake.
growth - an irreversible increase in size or mass.
- shrinkage of individual cells due to loss of turgor pressure
excessive water loss that causes loss of plant rigidity;