Possibly segmented worms. Primitive arthropods include centi- and millipedes, with many unspecialized legs (legs in more advanced arthropods often specialized to form antennae, mandibles and pedipalps), and they're as long and thin as segmented worms. Also, there's a possible 'intermediate form', Peripatus, the velvet worm, being long, thin and soft-skinned, but also having many stubby legs!
An arthropod
Nope - it's a member of the Jellyfish family, not an arthropod.
Barnacles
although an octopus has eight arms or tantacles
An arthropod's main features are the segmented body, an exoskeleton made from chitin, and joint appendages.
a bird
A monkey!
elephants
No.It is not even an Arthropod although these are its closest relatives.See the Related Link.
John West, the best
None, the closest would be Scorpio which is a scorpion. However the scorpion is not an insect it is an arthropod of the class arachnid.
An arthropod
Vectors of the arthropod.
As the arthropod grows up, the exoskeleton sheds in order for the arthropod to grow inside of it.
arthropod
yes a beetle is an arthropod
The Blowjob arthropod family