factors affecting transpiration

• light

  • increase in light increases the rate of transpiration
  • warms the leaf and opens the stomata
• humidity

  • decrease in humidity increases the rate of evaporation and diffusion of water vapour
  • this increases the rate of transpiration as there is a higher concentration gradient
• wind

  • increase in wind increases the rate of evaporation
  • this increases the rate of transpiration as humid air near the stomata is carried away, increasing the concentration gradient between surface of leaf and area outside leaf
• temperature

  • increase in temp increases the rate of transpiration
  • there is an increase in evaporation that increases the concentration gradient between water on surface of leaf and area outside leaf