Which term refers to an underdeveloped shoot at the end of the stem?

The term that refers to an underdeveloped shoot at the end of the stem is the terminal bud. This structure is typically found at the apex of the plant stem and represents a growth point from which new leaves, shoots, and flowers can develop. Terminal buds are crucial for the growth of the plant, as they allow for vertical extension and potential flowering.

In the context of plant anatomy, terminal buds are often associated with apical growth, which is vital for establishing the plant's overall structure and height. This is distinct from other types of buds, such as axillary buds, which are located in the leaf axils and can develop into branches or flowers but are not located at the tip of the stem.

The choice of root bud refers to a different part of the plant, specifically relating to the root system, and does not align with the description of a shoot. Understanding the roles and locations of different types of buds is essential for tasks such as pruning, training plants, and preparing floral arrangements.