DENDROLOGY

Detailed explanation-1: -Guard cells are responsible for the opening and closing of stomata because, during transpiration, the movement of ions (Potassium) in and out of the guard cells causes the opening and closing of Stomata. When the water moves inside the guard cells, causing them swell up and become turgid making the stomata open.

Detailed explanation-2: -The opening and closing of stomata are controlled by specialized cells called guard cells. The turgor pressure in the guard cells controls the opening and closing of the guard cells. Stomatal pores open when guard cells enlarge as a result of water absorption and close when guard cells shrink.

Detailed explanation-3: -Guard cells use osmotic pressure to open and close stomata, allowing plants to regulate the amount of water and solutes within them.