Which type of grasses are known for their high water use efficiency and ability to thrive in hot, dry conditions?

C4 grasses are particularly well-suited to hot and dry conditions due to their unique photosynthetic pathway. Unlike C3 grasses, which utilize a more common form of photosynthesis that can be less efficient under high temperatures and low moisture levels, C4 grasses have adapted a mechanism that minimizes water loss while still capturing carbon dioxide effectively. This allows them to maintain high rates of photosynthesis and growth even in environments where water is scarce.

C4 grasses are often found in tropical and subtropical regions, where they dominate many grasslands and prairies. Their adaptation includes structural modifications in their leaf anatomy, which facilitate a more efficient conversion of sunlight and carbon dioxide into energy, making them highly resilient in drought-prone areas. This efficiency, coupled with their ability to thrive in warm temperatures, sets them apart from other types of grasses.