What happens to the plant when this water supply is used up?

When a plant's water supply is used up, it experiences water stress, leading to wilting and reduced turgor pressure. As water becomes scarce, the plant may close its stomata to conserve moisture, which limits photosynthesis and gas exchange. Prolonged drought can cause leaf drop, stunted growth, and ultimately, if not replenished, the plant may die. The overall health and reproductive success of the plant are significantly compromised during such conditions.