Question

why baalanoglossus is connecting link​

Answer 1

There are some major qualities that all chordates possess, like, a notochord, hollow, dorsal nerve cord and pharyngeal gill clefts.

These specialities can be present for a while or for some specific stages of life in the organism. All of them are present in vertebrates.

But the vertebrates also contain additional qualities of a vertebral column and several other parts which are absent in chordates.

Thus, we can say that all vertebrates are chordates but not all chordates are vertebrates.

Answer 2

Balanoglossus is not connecting link it's a missing link or evolutionary link between

invertebrates and vertebrates.......

Hope it will help you

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