The primary function of roots in plants is to anchor them securely in the soil and absorb water and nutrients. Roots serve as the plant's foundation, preventing it from being uprooted by wind or water. Through specialized root systems, they efficiently collect moisture and essential minerals from the soil, which are vital for growth and development. Additionally, roots can store energy in the form of carbohydrates, which can be vital during periods of dormancy or stress. Overall, roots play a crucial role in supporting the plant's overall health and productivity.