Xylem Cell

• Function

  Transports water and mineral ions from roots to leaves
• Cell wall - thickened with lignin (provides strength)
• Transpiration: (of a plant or leaf) the exhalation of water vapour through the stomata
• Dead tissue and is hollow so it flows only 1 way
• Transports water into the leaf for mesophyll cells to use in photosynthesis and for transpiration from stomata
• Best Conditions for transpiration is the same as laundry weather:

  -Hot:water molecules have more energy and move faster

  -Dry:steeper diffusion gradient from plant to air

  -Air current:maintains diffusion gradient

  /Light:plant photosynthesises so stomata open