Final answer:
Taproot (d)systems, featuring a single main root that grows deep into the soil, allow plants to grow taller by providing stability and access to deeper water sources, compared to the shallower fibrous root systems typically found in monocots.
Step-by-step explanation:
The type of root architecture that allows plants to grow taller is the (d)taproot system. Taproot systems feature a single main root that grows deep into the soil, from which smaller lateral roots emerge. This deep-rooted architecture enables plants like dandelions and carrots to tap into deeper water sources and provides more stability, thus supporting taller growth. In contrast, a fibrous root system, which is commonly found in monocots such as wheat, rice, and corn, forms a dense network of roots near the soil surface. While fibrous roots help in preventing soil erosion and are effective in rapidly absorbing water and nutrients from the surface, they do not support the same height growth as taproots.