What characteristic do arthropods, classified as invertebrates, possess?

Arthropods are a diverse group of invertebrates that exhibit distinctive characteristics, which include segmented bodies and jointed legs. The segmentation in arthropods allows for specialization of body regions and facilitates movement, while the jointed limbs enable enhanced mobility and adaptability in various environments. This combination of features is essential for their survival and evolutionary success, as it allows them to occupy a wide range of ecological niches.

In contrast, the other options describe characteristics not applicable to arthropods. For instance, single-celled organisms are not representative of arthropods, which are multicellular and complex. Similarly, vertebrate characteristics, such as a backbone, are not found in arthropods, as they are classified as invertebrates.