What is the correct answer?


Which of the following is a connecting link between invertebrates and non-invertebrates?

A. Sphenodon

B. Balanoglossus

C. Tadpole larva

D. Crocodile

Correct Answer :

B. Balanoglossus

Balanoglossus is a connecting link between invertebrates and non-invertebrates. Balanoglossus belongs to phylum Hemichordata which was earlier considered as a sub-phylum under phylum chordata. But, now it is placed as a separate phylum under non-chordata because notochord and postanal tail are absent in it.

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