The primary purpose of roots in plants is to anchor them securely into the soil, ensuring stability and support. Roots also play a critical role in the absorption of water and essential nutrients from the soil, which are vital for the plant's growth and metabolic processes. Additionally, some roots serve as storage organs, storing carbohydrates and nutrients that the plant can utilize during periods of stress or dormancy. Overall, roots are fundamental for a plant's overall health and survival, allowing it to thrive in various environments.