Transcript What is Transpiration?

Transpiration
What is Transpiration?
• Transpiration is the process by which the plant
cools itself by releasing water from openings in
its leaves called stomata.
Model Agricultural Core Curriculum: Supplement
University of California, Davis
321.T1
Transpiration
Stomata
• Stomata are openings on
the bottom side of plants’
leaves which release water
to cool the leaves when
needed.
• They are opened and
closed by guard cells.
Model Agricultural Core Curriculum: Supplement
University of California, Davis
321.T2
Transpiration
When Do the Stomata Open?
• The stomata open only when the air temperature is
hot, during the daylight hours.
• They do not open if the plant is water stressed.
Model Agricultural Core Curriculum: Supplement
University of California, Davis
321.T3