What are animals called if they possess a notochord?

Usually,chordates have red blood containing red blood corpuscles. The blood is red due to the presence of the following pigment:

Which of the following possesses an endoskeleton made of cartilage or bone?

Which of the following is not a characteristic of chordates?

Statement-$1$ : Cephalochordata bears notochord all along the body throughout life.
Statement-$2$ : Urochordate bears vertebral column only in tail region throughout the life.
Then which is correct?

Name the following:
$A$ chordate animal having flame cells as excretory structures.