Which structure covers the root apex and protects the growing region?

• A. Root Cap
• B. Cortex
• C. Endodermis
• D. Epidermis

Answer: (A)

The main idea here is that a protective cap sits right at the tip of the root to shield the growing region. This root cap is a specialized group of cells that covers the very apex where the apical meristem is active, shielding those delicate dividing cells as the root pushes through soil. It also helps by secreting a slimy lubricating layer, making the path easier to penetrate, and often contains cells that sense gravity to guide growth. Behind this cap, the root is organized into tissues like the epidermis, cortex, and endodermis, which form the body of the root but do not cover the tip in the protective way the cap does. Because only the root cap directly protects the growing region at the apex, it is the correct structure.