Which of the following essential nutrients plays an essential role in the opening and closing of the stomatal aperture?

Question

Quizplus · Accepted Answer

Potassium (K) plays an essential role in the opening and closing of the stomatal aperture. When a plant loses water, cells in the guard cells of the stomata release K+ ions, causing water to leave the cells, and the stomata close. When there is enough water, K+ ions enter the cells, water follows, and the stomata open. Therefore, K is an essential nutrient for regulating gas exchange and water balance in plants.

Which of the Following Essential Nutrients Plays an Essential Role