Question

Protochordates possesses a notochord in larva stage. Appraise the use of this feature in these animals?

Answer 1

protochords possess notochord in their larva stage which is later degenerated . Notochord is a long flexible rod like structure present in all chordates which separates the nervous system from the gut. The main function of notochord is to support the body. It serves as a major skeletal element of the developing larva/embryo.

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Answer 2

Protochordates include Urochordates and Cephalochordates. In urochordates, the notochord is present in larval stages and later gets degenerate but in cephalochordates it is present along the entire length of their body during their complete life.
Notochord is a long flexible rod like structure present in all chordates which separates the nervous system from the gut. The main function of notochord is to support the body. It serves as a major skeletal element of the developing larva/embryo.