Transpiration (the xylem)

tubes contained within a plant that transports water up from the roots to the leaf

-Xylem vessles are covered in liginin
-Individual cells are long and have no end walls
-There are pits/holes in the walls of the xylem vessel
-Xylem cells contain no organnels/ no cytoplasm

This provides structural support and makes the xylem waterproof

It creates a hollow tube which allows a continous water colum to be formed as there is nothing blocking the flow of water

This allows the lateral movement of water to bypass blockages

This prevents chemical reactions which would slow down the flow of water
This allows more space for water

When water evaporated from the stomata it lowers the water potential of the mesophyll

Hydrogen bonds

Transpiration pull puts the xylem under tension

Because the xylem is strengthend by lignin

There is adhesion between the water moleules and the xylem and also negative pressure in the xylem

It decreases due to negative pressure

Movement, evaporation, Lowers, Pulls, Hydrogen, Continous(Water column), Transpiration Pull, Adhesion