Question

All vertebrates are chordates but all chordates are not vertebrates and why ?

Answer 1

sub-phylum Vertebrata, the notochord present in embryos gets replaced by a cartilaginous or bony vertebral column in adults. ... Thus, it can be said that all vertebrates are chordates but all chordates are not vertebrates.

Answer 2

All vertebrates are chordates but all chordates are not vertebrates.Justify

Answer =>

Members of the subphylum vertebrata posses notochord during the embryonic period hence the notochord is being replaced by a bony vertebral column in adults