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.