Which of the following is a characteristic of grasses?

Grasses are unique in their anatomical structure, and one key characteristic is the presence of parallel leaf veins. This feature is significant because it distinguishes grasses from other types of plants, such as broadleaf plants, which typically exhibit a netlike pattern in their leaf venation. The parallel vein structure allows grasses to efficiently transport water and nutrients, and it enhances their adaptability to various environments, contributing to their success as a group of plants. In addition, this structural adaptation can provide resilience against certain environmental stresses, such as wind and drought. Parallel leaf veins are a defining trait of the Poaceae family, which comprises all grass species, making this attribute essential for identification and understanding of grasses in ecological contexts.