Changes in solute ion concentrations that are involved in the opening and closing of stomata pertain primarily to which of the following?

Question

Quizplus · Accepted Answer

Potassium ions play a crucial role in the opening and closing of stomata by regulating the turgor pressure of the guard cells. As potassium ions are pumped into the guard cells, water follows, causing them to swell and open the stomata. Conversely, when potassium ions are pumped out of the guard cells, water flows out, and the stomata close. Cobalt, calcium, magnesium, and iron ions do not have as significant of a role in stomatal regulation.

Changes in Solute Ion Concentrations That Are Involved in the Opening