The primary function of the roots of trees is to anchor the tree firmly in the ground and absorb water and nutrients from the soil. Roots prevent the tree from toppling over and provide stability, especially in adverse weather conditions. Additionally, they play a vital role in transporting water and essential minerals to the rest of the tree through the vascular system. Roots also store energy and nutrients, helping the tree survive during unfavorable conditions, such as droughts or harsh winters. Overall, the health and growth of trees are heavily dependent on the efficiency of their root systems.