Simple Animals: Arthropods Around Us

Arthropods, including millipedes and spiders, are a diverse group of invertebrates with over a million known species. Despite their differences, they share common features such as a hard exoskeleton and segmented bodies. Many arthropods have jointed appendages, like the hinged claw of a crab. These creatures are not only diverse but also beneficial to humans in various ways.

What are the common characteristics of arthropods?

What is an exoskeleton and why is it important for arthropods?

Describe the structure of an arthropod's body.

How do the appendages of arthropods differ from those of other animals?

What are some examples of useful arthropods and their benefits?