Question

what is a notochord​

Answer 1

Answer:

The notochord is the defining structure of the chordates, and has essential roles in vertebrate development. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo.

Answer 2

Notochord is a mesodermally derived rod-like structure formed on dorsal side during embryonic development in some animals.

More Explanation:

Animals with notochord are called chordates and those animals which do not form this structure are called non-chordates, e.g. porifera to echinodermata.

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