Give scientific reasons.
Balanoglossus is connecting link between non-chordates & chordates.
Answer:
Through the view point of evolution, Balanoglossus is considered as connecting link between non-chordates and chordates. This animal shows the characters of both the groups. It is a chordate since it has a notochord, tubular nerve cord and gill slits. The invertebrates character includes the phosphogens and larva.
