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Function of xylem?
Transport water and mineral ions support plant
Function of phloem?
Transport sucrose and amino acids
What is transpiration?
Loss of water vapour from leaves
Pathway of water through a plant?
Root hair cells, root cortex, xylem, mesophyll cells, air spaces stomata
What factors affect transpiration?
Temperature wind speed humidity
Explain transpiration pull
Evaporation from leaves pulls a continuous column of water up the xylem
Define translocation
Movement of sucrose and amino acids in phloem from sources to sinks