An invertebrate is an animal without an internal skeleton. Ants do not have an internal skeleton so they are invertebrates by definition.
They are vertebrates.
Yes, ants are invertebrates like all insects are. They do not have a backbone (spine) which is what would classify them as vertebrates. See related questions and links for additional details.
No, an arthropod is any invertebrate animal having an exoskeleton.
Ants are invertebrates because they have an exoskeleton with no backbone.
Ants are invertebrates because they have an exoskeleton with no backbone.
invertebrate - has exoskeleton
An invertebrate.
arthropods always have 3 segments, these are made up of general bugs and insects such as beetles, ants, moths and butterflies.
no
It is an invertebrate 
A bullfrog is not an invertebrate; it has a spine.
The octopus is an invertebrate... It has no skeleton.