Difference between Chordata and Non-chordata are stated below:

Chordata

1. Notochord is present in embriyo.

2. Central dorsal, hollow nerve is present.

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3. Phayregial gill slits present.

4. Heart non vertebral.

5. Hepatic portal system present.

6. RBC posses hemoglobin.

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7. Blood flows in dorsal vessel from before backwards.

Non-Chordta

1. Notochord is absent

2. Central nervous system

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3. Pharyngeal gill slit is absent.

4. Heart dorsal.

5. Hepatic portal system absent.

6. If present dissolve in plasma.

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7. Blood flows in dorsal vessel from behind forward.