What is the fate of notochord in higher chordates?

Answer 1

Notochord is a supporting structure found in lower chordates and in embryos of all higher chordates. It functions as a major axial supporting structure just as vertebral column does in our body.

Answer 2

It is present in the embryos and serves as a site for the vertebra column to form about. It is eventually fully absorbed by the spine.In the spini, it forms a central part of the intervertebral disc, called as nucleus pulposus

Answer 3

The notochord is a cellular chord that develops by transformation of the notochordal process. The notochord will eventually become the nucleus pulposis of each intervertebral disk.

formation of notochordal process :

the primitive streak is formed from a linear band of cells called epiblasts which first appears caudally then grows cranially.At the cranial end its cells proliferate to form primitive node.

Mesenchymal cells migrate from the primitive knot to form a midline cellular cord known as the notochordal process.

Answer 4

In higher chordates, such as vertebrates, the notochord is replaced by the vertebral column or backbone during development. The notochord provides structural support in early embryonic development but is eventually replaced by the more complex vertebral column, which provides greater support and protection for the spinal cord.

Answer 5

It disappears, its only remains is the nucleus polposus found at the centre of intervertebral discs