When the leaves of plant wilt, there is not enough | too much water in each cells central vacuole. because one of the functions of the vacuole is to strengthen the cell | capture energy, the plant appears droopy when it does not receive enough water

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

that is wrong, its not thymus.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

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