Nodes on a twig are defined as the points where what attaches?

• A. Leaves or buds
• B. Bark only
• C. Roots only
• D. Fruits only

Answer: (A)

Nodes on a twig are the points where growth occurs and where attachments form—specifically, where a leaf (via its petiole) attaches or where an axillary bud sits that can develop into a new shoot or flower. The space between nodes is called the internode. This is why the defining attachments at a node are leaves or buds. Bark is just the outer covering, roots are below-ground, and fruits arise from flowers (often from buds at nodes) rather than being the attachment point itself.