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Learn about the Stoma

What is the stoma?
The stoma is part of a leaf of a vascualr plant. (1)
A stoma is a small pore. (1)

What does a stoma do?
A stoma is said to transpire, which pulls upward on the column of water in the xylem.  (1)

Resources
1. https://biologydictionary.net/vascular-plant/

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