Most plants grow in such that the stem is being held by the root in the ground, then the stem holds the upper parts of the plants, such as the leaves, flowers, and probably fruits. However, there is a part on the plant that is known as a node. Node is always a part of the stem that serves as a point of attachment for aerial roots, leaves, and flowers.
Definitely, what connects the flower buds to the stem must have been the node. Stems are typically part of the plant's shoot system. They are connected to the root beneath and grow longer above the ground level. They vary in diameter, depending on the kind of plant.
The stem is somewhat like the skeleton supporting the plant to stand. It serves as a roadway through to every part of the plant. It helps to hold the flowers, leaves, and buds. It also performs the vital function of transporting nutrients from the root to the other parts of the plant.