Some species of rose, which are dicots, can grow on steep hillsides because of a taproot system that helps

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A taproot system, which consists of one main root growing deep into the soil, helps to anchor the plant and prevent it from being washed away on steep hillsides. This is especially important for species of rose that may face challenges with soil erosion on sloped terrain. While maximizing surface area for absorption and transporting water/minerals to the stem are important functions of roots, they are not directly related to the plant's ability to grow on a steep hillside. Food storage organs may be involved in taproots, but this is neither the primary nor the unique function of the root system in relation to hillside growth. Finally, while roots do play a role in holding the soil together, this is not the primary advantage of taproots in relation to hillside growth.

Some Species of Rose, Which Are Dicots, Can Grow on Steep