Biology
Which one of the following has a bilateral symmetry in its body organization?

Euchinus
Sea anemone
Nereis
Asterias

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Biology
Which one of the following statements regarding haemoglobin is correct?

Haemoglobin of RBC can carry only carbon dioxide
Haemoglobin is only used for blood clotting and not for carrying gases
Haemoglobin of RBC can carry both oxygen and carbon dioxide
Haemoglobin present in RBC can carry only oxygen but not carbon dioxide

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