What type of leaf arrangement features one leaf per node?

The correct answer is that the type of leaf arrangement featuring one leaf per node is known as alternate leaf arrangement. In this arrangement, leaves are positioned individually at each node along the stem, typically alternating sides as they ascend the stem. This optimal positioning allows for maximum exposure to sunlight, which is crucial for photosynthesis.

In contrast, opposite leaf arrangement involves two leaves per node, directly across from one another, while whorled arrangement has three or more leaves per node. A compound leaf arrangement consists of multiple leaflets attached to a single petiole, and thus does not fit the criteria of having one leaf per node. Understanding these various arrangements helps in plant identification and comprehension of their growth habits and adaptations.