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Non - Chordates...

Non - Chordates

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[A] : Chordates have an oxygen carrying pigment called haemoglobin . It is always present in red blood corpuscles . [R] : Non-chordates have either no haemoglobin or if it is present , it is present in plasma . Non-chordates require very little oxygen as compared to chordates for their body functions.

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Which animals is non- chordate ?