What are compound leaves characterized by?

Compound leaves are characterized by having two or more leaflets that arise from a single point on the stem, which distinguishes them from simple leaves that consist of just one undivided blade. Each leaflet may have its own smaller blade and petiole, but they collectively contribute to the appearance of a single leaf structure. This trait is significant in plant identification and classification, as it can affect how plants capture sunlight, respire, and undergo photosynthesis. Understanding the structure of compound leaves is also important for comprehending the plant's overall growth habits and adaptations. In contrast, the other options describe characteristics that do not accurately define compound leaves, highlighting the uniqueness of this leaf form in plant anatomy.