a: Guard cells ~
b: valves
What:
"Specialized epidermal
cells called guard cells are like valves to a leaf They can open and close in response to weather, light, and moisture They regulate the passage of water, oxygen, and carbon dioxide"
Useful?
Writer: C. Kohn, Waterford
LCC:
Where:
Date: Nov 28 2015 6:05 PM
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