Fact 1: Vertebrate chordates have a backbone.

Fact 2: Invertebrates are animals who lack a backbone or spinal column.

Given the two facts above, answer the question "Vertebrate chordates have what part of the skeletal system?" with the following options: 
- spinal column
 - hard bones
 - aerobic capacity
 - cartilage bones
 - critical organs
 - joints
 - fur and fat
 - graptolites


 

 spinal column        