What characteristic defines grasses?

The defining characteristic of grasses is their jointed, hollow stems and the presence of parallel veins in their leaves. This structure allows grasses to be highly adaptable and resilient, particularly in various environmental conditions. The hollow stems contribute to a lighter weight, which helps grasses withstand wind and maintain flexibility. Additionally, the parallel venation is indicative of monocotyledons, the plant group to which grasses belong.

Grasses typically have blades that are elongated and narrow, which aids in reducing water loss and allows them to effectively capture sunlight for photosynthesis. This adaptation can be vital for survival in a range of habitats, from prairies to wetlands.

Understanding this distinctive morphology is crucial for identifying grasses in various ecosystems and can assist in effective management practices relating to agriculture and horticulture.