The word millipede is derived from two Latin words: Latin roots mille ("thousand") and pes ("foot"). A millipede is an arthropod. An arthropod is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages.
invertebrates
No - an invertebrate has no internal skeleton. Tortoises have a spines, ribs, a skull and leg-bones
invertebrates
2 thousand
no or yes
no they do not have backbones if a worm do not have a backbone then a thousand led do not have a backbone 😱💪
invertebrate - has exoskeleton
An invertebrate.
no
It is an invertebrate 
A bullfrog is not an invertebrate; it has a spine.
The octopus is an invertebrate... It has no skeleton.