Here's why:
* Insects belong to the phylum Arthropoda: This phylum is characterized by having a hard exoskeleton, segmented bodies, and jointed legs.
* Worms are much more diverse: They belong to different phyla, including:
* Annelida: Earthworms, leeches, and marine worms.
* Nematoda: Roundworms.
* Platyhelminthes: Flatworms (like tapeworms and flukes).
So, while both insects and worms are invertebrates (animals without backbones), they are distinct groups with different characteristics.