Question

What is the difference between nerve cord and notochord ?

Answer 1

Nerve Cord: It refers to the major cord of nerve fibres which later develops into the spinal cord of vertebrates.

Notochord: A longitudinal solid rod like structure which supports the body of chordates.

Nerve Cord	Notochord
1.It refers to the major cord of nerve fibres which later develops into the spinal cord of vertebrates.	1.A longitudinal solid rod like structure which supports the body of chordates.
2.A chain of ganglia.	2.A rod like solid structure.
3.Nerve cord originates from the ectoderm.	3.Notochord originates from the mesoderm.
4.It is found in both vertebrates and invertebrates.	4.It is found in all chordates.
5.It coordinates nerve impulses which arrive from peripheral nervous system.	5.Provides structural support and sites for the attachment of various muscles.
6.It later on forms the main parts of the central nervous system.	6.It later on forms the axial skeleton of vertebrates.