Water in mesophyll cells passes out of the leaf through evaporation (transpiration), creating tension due to the cohesive forces between water molecules and the adhesive forces between water and xylem walls, pulling water up the stem.
Water in mesophyll cells passes out of the leaf through evaporation (transpiration), creating tension due to the cohesive forces between water molecules and the adhesive forces between water and xylem walls, pulling water up the stem.
| Front | Describe and explain how water in the mesophyll cells passes out of the leaf. ( 3 marks) |
|---|---|
| Back | adhesion/attraction of water molecules to walls of xylem; results in tension as water pulled up stem; pulling in walls; |
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