Write the two differences between chordates and non-chordates?

1.	Write the two differences between chordates and non-chordates?
Answer» Difference between Chordata and Non-Chordata: (i) Animals of sub-kingdom Chordata have a notochord, in some stage of their life. Non-chordate animals do not have a notochord, in any stage of their life. (ii) Chordates have nerve cord on the mid-dorsal surface. In non-chordates, nerve cord is absences, or if present then it is on the mid-ventral surface. (iii) Chordates have pharyngeal gill clefts in some stage of life. In non-chordates, the pharynx does not have any cleft at any stage of life.

Answer»

Difference between Chordata and Non-Chordata:

(i) Animals of sub-kingdom Chordata have a notochord, in some stage of their life. Non-chordate animals do not have a notochord, in any stage of their life.

(ii) Chordates have nerve cord on the mid-dorsal surface. In non-chordates, nerve cord is absences, or if present then it is on the mid-ventral surface.

(iii) Chordates have pharyngeal gill clefts in some stage of life. In non-chordates, the pharynx does not have any cleft at any stage of life.

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