An arthropod is an invertebrate animal, such as an insect or spider. Most arthropods move by walking. However, some can move by swimming, flying, hopping and wiggling.
All arthopods do not have backbones which makes all arthopods invertebrates!
arthopods
Exoskeletons.
the normal ones
Gill
Arachnids such as spiders and scorpions have chelicerae.
they are all jointed
Arachnids, Crustations, Millipedes, Centipedes, Insects
Sponges, Cnidarians, Mollusks, and Echinoderms are not Arthropods.
Yes lobsters are invertebrates, as are all Arthopods.
arthopods
mollusks and arthopods i very samrt!!