Plant Anatomy Guard Cell Function. Depending on the type of plant the spatial arrangement of these cells is not only dependent on size but also the shape of air-space below them. Cells surrounding guard cells but differing from other epidermal cells are called subsidiary cells.
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. The traditional view of guard cell mechanics one that has long been established in textbooks and anatomical descriptions is that thickening of the interior guard cell wall adjacent to the pore itself promotes opening of the stomatal pore. The control of gaseous exchange between the leaf and external atmosphere is governed by stomatal conductance gs.
Guard cells are small but important cells in leaves that help plants maintain optimal health.
Stomata are Pores each guarded by two guard cells which control the size of the pore. Parenchyma cells are alive at maturity. Their cell walls are thick on the inner surfaces. Stomata are Pores each guarded by two guard cells which control the size of the pore.
