Question

There is evidence of fatal science among chordates justify the statement

Answer 1

The characteristic features of the phylum, Chordata, include the presence of a notochord and paired pharyngeal gill slits. ... Thus, it can be said that all vertebrates are chordates but all chordates are not vertebrates.

Answer 2

The characteristic features of the phylum, Chordata has includes the presence of a notochord and paired pharyngeal gill slits. In sub-phylum Vertebrata, the notochord present in embryos gets replaced by a cartilaginous or bony vertebral column in adults. Therefore it can be said that all vertebrates are chordates but all chordates are not vertebrates. Hence we can prove the given statement.