Question: What do you call a pore, found in the epidermis of leaves, stems, and other organs, that facilitates gas exchange, is part of the soil-plant-atmosphere continuum (SPAC),  the name of the pathway for water moving from soil through plants to the atmosphere
Sentence (from "Stoma"): The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening.
Relevant evidence: No