The leaf is attached to the stem on the area known as the Node.

• A. Xylem
• B. Sepal
• C. Cambium
• D. Node

Answer: (D)

Leaves attach to the stem at joints called nodes. Nodes are the points on the stem where a leaf, and often a bud, emerges, making them the specific location of attachment. The stem segments between nodes are called internodes. Xylem is the tissue that moves water and minerals through the plant, running inside the stem but not describing the attachment point. Sepals are part of a flower that protect the bud, not the leaf attachment site. Cambium is a growth tissue between xylem and phloem responsible for the plant’s secondary growth, and it isn’t where leaves attach either. So the node is the correct term describing where the leaf attaches.