What phylum of animals in characterized by jointed appendages and a hard exoskeleton?

The phylum characterized by jointed appendages and a hard exoskeleton is Arthropoda. This diverse group includes insects, arachnids, crustaceans, and myriapods, all of which share these key features. The exoskeleton provides protection and support, while jointed appendages allow for a wide range of movement and adaptability. Arthropods are the largest phylum in the animal kingdom, showcasing significant diversity in form and function.