The stomata open or close due to changes in the

Explanation

## Page 25 During the day, due to higher transpiration, water is absorbed by the roots and transported to different parts of the plant through xylem, due to which the guard cells become swollen (turgid). As a result, the stomata open. At night, the guard cells shrink and become rigid because the roots absorb less water; therefore, the stomata close. Potassium plays an important role in the opening and closing of stomata.