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1.
Water is used for photosynthesis
2.
Water is used by the plant for respiration.
3.
Water is used for structural support and the building of the protoplasm.
1.
Water evaporates from stomata
2.
Water pulled across leaf to replace it
3.
As water leaves, there's tension in the xylem
4.
Water pulled up xylem as continuous column
5.
Column maintained by cohesion (water molecules attracted to each other via Hydrogen bonds) and adhesion (water sticks to sides of xylem).
6.
Water is pulled across root.
1.
Endodermis cells actively transport ions into the xylem.
2.
Lowering the water potential of the xylem.
3.
Water moves from high water potential in endodermis into lower water potential in xylem.
4.
As water enters xylem, it creates a hydrostatic pressure.
5.
Hydrostatic pressure moves water up xylem along a pressure gradient (high--> low pressure) and moves water already in the xylem further up.
1.
Water evaporates from stomata
2.
Water pulled across leaf to replace it
3.
As water leaves, there's tension in the xylem
4.
Water pulled up xylem as continuous column
5.
Column maintained by cohesion (water molecules attracted to each other via Hydrogen bonds) and adhesion (water sticks to sides of xylem).
6.
Water is pulled across root.
1.
Endodermis cells actively transport ions into the xylem.
2.
Lowering the water potential of the xylem.
3.
Water moves from high water potential in endodermis into lower water potential in xylem.
4.
As water enters xylem, it creates a hydrostatic pressure.
5.
Hydrostatic pressure moves water up xylem along a pressure gradient (high--> low pressure) and moves water already in the xylem further up.
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