Invertebrates are animals that lack a vertebral column, or backbone, and all of the vertebral bodies act as a support column to hold up the spine. Given these facts, invertebrates are animals that lack a what among the following options:
- Chlorophyll
 - Epidermis
 - pair of legs
 - small bones
 - cartilage
 - an organism's body
 - support column
 - epidermal


 

       support column  