Why are small leaves an adaptation in a desert environment?

Leaves are responsible for the process of transpiration. If leaf size is decreased then the rate of transpiration also decreases. In order to save the little water available, plants living in the ecosystem tend to have small leaves.

Small leaves are an adaptation in a desert environment because they reduce water loss through transpiration. In hot and arid environments like deserts, water is scarce, and plants face challenges in retaining water. Small leaves have a smaller surface area compared to larger leaves, which means there is less surface area exposed to the sun and wind, thus reducing water loss through transpiration. Additionally, small leaves often have thicker cuticles and fewer stomata, further minimizing water loss. This adaptation helps desert plants conserve water and survive in dry conditions.