The root cap is a thimble-like structure that covers the root at the apex. Which option best describes it?

The root cap is a thimble-like structure that covers the root at the apex. Which option best describes it?

• A. Thimble-like structure that covers the leaf
• B. Layer of cells protecting the stem
• C. Dense tissue for water storage
• D. Thimble-like structure that covers the root at the apex

Answer: (D)

The key idea is that the root cap is a protective, thimble‑like cover at the tip of the root. It shields the growing apical meristem as the root pushes through soil and also secretes mucilage to ease movement; it even helps gravity perception to orient the growth downward. The description that best fits is a thimble-like structure that covers the root at the apex. The other ideas describe parts of leaves, stem protection, or storage tissues, which aren’t what the root cap is.

The key idea is that the root cap is a protective, thimble‑like cover at the tip of the root. It shields the growing apical meristem as the root pushes through soil and also secretes mucilage to ease movement; it even helps gravity perception to orient the growth downward. The description that best fits is a thimble-like structure that covers the root at the apex. The other ideas describe parts of leaves, stem protection, or storage tissues, which aren’t what the root cap is.