What is the function of roots?

The function of roots is primarily to anchor the plant securely into the soil and to absorb water and essential nutrients necessary for growth and survival. Roots serve as a foundation, helping to stabilize the plant against environmental factors such as wind and soil erosion. By extending deep into the soil, roots can access moisture and minerals that may be out of reach for the above-ground parts of the plant.

Additionally, while roots do absorb nutrients from the soil, they also play a crucial role in nutrient storage and can interact with soil microbes to facilitate nutrient exchange. This dual role as both anchor and nutrient supplier is vital for the overall health and growth of the plant.

The other options mentioned do not accurately describe the primary functions of roots. For example, capturing sunlight is a function associated with leaves, temperature regulation is not a primary role of roots, and flower production is a function of the reproductive parts of the plant, which are typically above ground. Thus, the correct answer highlights the essential anchoring and nutrient-absorbing roles that roots play in the life of a plant.