Question

State three main characteristics of chordates.

GSEB - Class 9 Chapter - 7.Diversity in Living Organisms-Il (Classification of Animals) Page 65

Answer 1

Characteristics of chordata :-

1) Chordata is most advanced animal phylum .
2) Notochord , a solid unjointed rod , is present in chordates at some stages of life .
3) A dorsal hollow nerve cord develops in embryo which usually persist throughout life in most chordates.
4 ) Gill slits r present at some stages of life .
5) A tail is present Behind the cloacal or anal opening at some stages of life. it is absent in the adults of some chordates .

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Answer 2

A chordate is an animal belonging to the phylum Chordata; they possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.