The long, hairlike structures found on the epidermal cells of roots are called root hairs. Their primary function is to increase the surface area for water and nutrient absorption from the soil. Root hairs extend into the soil, forming a dense network that enhances the plant’s ability to access essential minerals and water. This increased surface area facilitates the absorption of ions and water by creating more contact points with the soil particles. Root hairs play a crucial role in nutrient uptake, aiding in the overall growth, development, and nutrient acquisition efficiency of plants.