Arthropods are a diverse group of invertebrate animals that includes insects, spiders, crustaceans, and more. They are characterized by having:
* An exoskeleton: A hard, outer shell that provides protection and support.
* Jointed appendages: Legs, antennae, and other body parts that are segmented and allow for movement.
* Bilateral symmetry: Their bodies are symmetrical along a central axis.
* Segmented bodies: Their bodies are made up of repeating units called segments.
Arthropods are the most abundant and diverse animal phylum on Earth, with over a million known species. They play crucial roles in ecosystems, from pollinating plants to decomposing organic matter.
Let me know if you have any other questions about arthropods!