What properties of water make it biologically significant to plants?

Water has adhesive properties which allow the polar water molecules to adhere to other hydrophilic surfaces such as cellulose. This aids the movement of water through xylem vessels in plants. Water also has cohesive properties between individual water molecules due to the hydrogen bonding between the negatively charged oxygen atom and the positively charged hydrogen atom. This property means water can be drawn up in a continuous stream through xylem vessels during transpiration despite low pressures that may occur. Further, water is transparent allowing aquatic plants to be able to photosynthesise. Lastly, due to the dipolar nature of water, it is a useful solvent. A substance must be polar or partially polar to dissolve (hydrophilic). Most metabolic reactions therefore occur in water. Dipolar properties also mean hydrophobic substances are repelled which is useful for the formation of cell membranes involving hydrophobic tails of phospholipids facing inwards and hydrophilic heads outwards, which subsequently causes the bilayer of phospholipids to self arrange in water to form membranous structures.