Passage:
Botanists categorize plant root systems into two main structures: taproot systems and fibrous root systems. A taproot system features one single, prominent main root that grows deep vertically into the soil, with smaller lateral roots branching off it. This deep penetration allows taproot plants, such as dandelions and carrots, to reach deep groundwater reserves during dry periods. In contrast, a fibrous root system consists of a dense network of numerous thin roots of roughly equal size that spread horizontally near the soil surface. Unlike taproot systems, fibrous root systems, commonly found in grasses and wheat, prevent topsoil erosion by anchoring the upper layer of soil securely.
According to the passage, how does a taproot system explicitly differ from a fibrous root system in its physical structure?
- A taproot system has one prominent main root extending deep vertically, whereas a fibrous root system consists of many thin roots of roughly equal size spreading near the surface.Answer
- BA taproot system consists of a horizontal network of thin surface roots, whereas a fibrous root system relies on a single deep vertical main root.
- CA taproot system functions primarily to prevent topsoil erosion, whereas a fibrous root system functions to access deep groundwater reserves.
- DA taproot system is found primarily in grasses and wheat, whereas a fibrous root system is characteristic of dandelions and carrots.