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Unformatted text preview: • 0.03ml/cm2/hr
– If tree has 100m2 of leaf area = 190 gal/day Transpiration a big tree would use about 200 gallon
of water a day. transpiration is losing water from the leafes
and evaporation is losing water from something else for example soil. Transpiration
• Driving force
– Evaporation Transpiration Transpiration
• Protective mechanisms
– Thickened cuticle
Tomentose (hairy) leaves
Small leaves http://www.sbs.utexas.edu/mauseth/ http://www.cambridge2000.com/ http://www.sbs.utexas.edu/bio406d/ http://www.botgard.ucla.edu/html/botany Transpiration
http://toptropicals.com/pics/ Environmental Factors Affecting the Rate of
Soil water Transpiration Environmental Factors that Affect the Rate of
– Plants transpire more rapidly in the light than in
• Light stimulates the opening of the stomata.
• Light also speeds up transpiration by warming the leaf. – Intensity
light is important for trasnpiration and it opens the stomata and as
well as cool the leafe Transpiration Environmental Factors that Affect the Rate of
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This document was uploaded on 01/17/2014.
- Winter '08