Question

Notochord is present throughout the life in ☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️​

Answer 1

in lower chordates notochord persist throughout the life.....whereas in higher vertebrates it is replaced by vertebral column....

hope this will help u dear.......✌

Answer 2

Notochord persists throughout life in the lower chordates, but in the higher chordates, it is surrounded or replaced, partly or fully, in the adult by a jointed vertebral column.