Dragonflies are in the phylum arthropoda, and within that they are nested into Hexapoda, and then further into the Insecta group, where they can be found within the infraorder Anisoptera.
It is an invertebrate 
3 of the water invertebrate groups are the annelids, arthropods and crustacean.
They are invertebrates. All insects are invertebrates. (P.S. 'Invertebrate' or 'Vertebrate' is spelled with an 'e' not an 'i' ^_^)
Invertebrate 1: Thomas Hinkle Invertebrate 2: You
One of the characteristics of many invertebrate groups is that there bodies are made of very many segments. Examples include the worms, spider, starfish and insects.
Well its sort of confusing, see since the invertebrate group has more groups than the vertebrate than that means invertebrate would have more organisms.
None, all are in different groups
The eight groups are:* Mollusks * Echinoderms * Arthropods * Annelids * Nematodes * Porifera* Platyhelminthes * Coelenterates Or go to:What_are_the_8_groups_of_invertebrates
An invertebrate is an organism that lacks a backbone. The 6 groups of invertebrates are sponges, cnidarians, worms, mollusks, echinoderms and arthropods.
Arthropods' bodies are segmented into three parts. The head, the thorax, and the abdomen
yes
no, they often tend to hang out in the same place but split up when they leave.