Invertebrates are animals that lack a vertebral column, or backbone.
Insects are the most common invertebrates.
Insects don't have backbones.
What don't insects have?

[1] Sensory organs
[2] Chlorophyll
[3] exoskeleton
[4] Energy.
[5] Energy
[6] nerves
[7] backbones
[8] antennae