No, worms are invertebrates, meaning they have no backbones, while arachnids are the spiders, mites and scorpions.
Squid, octopus, worms, snails, caterpillars, crab, starfish, jellyfish, spiders, sponges, lice, ants, mites, and flies have no backbones.
No there is more with backbones
Pigs do have backbones.
No backbones
it has 2 backbones
All snakes have backbones.
all fishes have backbones
The backbones are part of the skeleton.
no they don't have backbones
no myriapods don't have backbones
Yes, they do.