What is the primary benefit of sod-forming plants?

The primary benefit of sod-forming plants is that they cover the ground with biomass. This characteristic is significant because it helps to stabilize the soil, reducing erosion and minimizing sediment runoff. The dense growth of these plants creates a protective layer that shields the soil from rainfall impact and wind, which can displace soil particles. Additionally, the biomass produced by sod-forming plants enhances water retention in the soil, provides habitat for various organisms, and contributes to the overall health of the ecosystem.

While the other options may describe traits of plants in general, they do not encapsulate the primary advantage of sod-forming plants like the ability to cover the ground effectively with biomass, which plays a critical role in erosion control and soil conservation.