What does the root cap do for the growing root?

The root cap plays a vital protective role for the growing root. As the root pushes through the soil in search of water and nutrients, the root cap acts as a shield, safeguarding the delicate root tip—where growth occurs—from physical damage and abrasion caused by soil particles. This protection is essential because the root tip is crucial for the plant's ability to grow and absorb water and nutrients effectively.

While other options mention functions important to plant growth, such as nutrient absorption and energy storage, they do not directly relate to the specific function of the root cap. The root cap's primary role is focused on protection, allowing the root to penetrate the soil safely and continue its development.