What results from excessive transpiration in a plant?

Excessive transpiration in a plant occurs when there is a high rate of water vapor loss through the stomata, which can lead to significant water loss. When a plant loses more water than it can uptake from the soil, it can cause the cells to become dehydrated and result in wilting. Wilting is a physiological response that indicates the plant is experiencing stress due to insufficient water availability, causing leaves and stems to droop as they lose turgor pressure.

In contrast, rapid growth spurts would typically require adequate water, light, and nutrients rather than excessive transpiration. Water conservation strategies like closing stomata often occur when transpiration rates are high, which is not a desirable effect of excessive transpiration. Enhanced photosynthesis can occur under optimum conditions, but it relies on an adequate water supply rather than the excessive loss of moisture that transpiration entails. Thus, wilting due to water loss is the key result of excessive transpiration.