What happens when stomata opens?

Answer 1

Carbon dioxide, Oxygen, water vapor, and other gases enter and exit the stoma. They open during the day because plants need to take in raw materials (Such as the three listed at the beginning of the answer) to make food.

Answer 2

In a cell, Potassium ions will enter the vacuoles of guard cells around a stomata. Then there will be a high concentration of Potassium ions in the guard cells' vacuoles and, consequently, the guard cells' vacuoles will become hypertonic. As a result, water will rush in to the guard cells' vacuoles in order to make the guard cells isotonic. As the water rushes in, the vacuoles swell and bend, thus opening the stomata. To close the stomata, Potassium will leave the guard cells' vacuoles, and the vacuoles will become hypotonic. In order to become isotonic, water will rush out of the guard cell vacuole, the vacuoles will relax, and the stomata will close again.

Answer 3

When stomata open, carbon dioxide can enter the leaf for photosynthesis while oxygen and water vapor can exit. This allows the plant to take in necessary carbon dioxide and release excess oxygen and water vapor. Additionally, the opening of stomata can help regulate gas exchange and water loss in the plant.