[PAR] [TLE] Soil plant atmosphere continuum [SEP] The soil-plant-atmosphere continuum (SPAC) is the pathway for water moving from soil through plants to the atmosphere.  Continuum in the description highlights the continuous nature of water connection through the pathway.  The low water potential of the atmosphere, and relatively higher (i.e. less negative) water potential inside leaves, leads to a diffusion gradient across the stomatal pores of leaves, drawing water out of the leaves as vapour.  As water vapour transpires out of the leaf, further water molecules evaporate off the surface of mesophyll cells to replace the lost molecules since water in the air inside leaves is maintained at saturation vapour pressure.  Water lost at the surface of cells is replaced by water from the xylem, which due to the cohesion-tension properties of water in the xylem of plants pulls additional water molecules through the xylem from the roots toward the leaf. [PAR] [TLE] Stoma [SEP] In botany, a stoma (plural "stomata"), also called a stomate (plural "stomates") (from Greek στόμα, "mouth"), is a pore, found in the epidermis of leaves, stems, and other organs, that facilitates gas exchange.  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.
[PAR] [TLE] Soil plant atmosphere continuum [ SEP ] The soil - plant - atmosphere continuum ( SPAC ) is the pathway for water moving from soil through plants to the atmosphere . Continuum in the description highlights the continuous nature of water connection through the pathway . The low water potential of the atmosphere , and relatively higher ( i.e. less negative ) water potential inside leaves , leads to a diffusion gradient across the stomatal pores of leaves , drawing water out of the leaves as vapour . As water vapour transpires out of the leaf , further water molecules evaporate off the surface of mesophyll cells to replace the lost molecules since water in the air inside leaves is maintained at saturation vapour pressure . Water lost at the surface of cells is replaced by water from the xylem , which due to the cohesion - tension properties of water in the xylem of plants pulls additional water molecules through the xylem from the roots toward the leaf . [PAR] [TLE] Stoma [ SEP ] In botany , a stoma ( plural " stomata " ) , also called a stomate ( plural " stomates " ) ( from Greek στόμα , " mouth " ) , is a pore , found in the epidermis of leaves , stems , and other organs , that facilitates gas exchange . 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 .
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
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
stoma
stoma