Which plant type typically has a coarser root system compared to its above-ground structure?

Broadleaves typically have a coarser root system relative to their above-ground structure. This characteristic can be attributed to the fact that many broadleaf plants are perennial and grow in a way that requires a robust and extensive root system for stability and nutrient uptake. These plants often develop thick, strong roots that can penetrate deeper into the soil to access water and nutrients, supporting their larger leaves and, sometimes, substantial fruit production.

In contrast, grasses generally have a fibrous root system that is relatively fine compared to their above-ground growth. Sedges can have varying root structures, but they are often more finely textured, similar to grasses. Vines can have diverse root systems depending on the specific variety, but they typically do not exhibit the same coarse root structure as broadleaves. Therefore, broadleaves are the plant type that generally exemplifies a coarser root system relative to their above-ground structure.