Biology
Which of the following is the largest phyllum in the animal kingdom in respect of number of species

Annalida
Arthropoda
Platyhelminthes
Chordata

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

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

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