state the difference between urochordates and cephalochordates with reference to the notochord.

 

 

| **urochrodates**
 
  | **cephalochordates**
 
  |
| 1) the notochord is present in the larval tail.
 
  | 1) the notochord extends from the head to the tail region and is persistent throughout their life.
 
  |