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

Haemoglobin of RBC can carry both oxygen and carbon dioxide
Haemoglobin present in RBC can carry only oxygen but not 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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Biology
In test tube baby

Development of ova take place in test tube without fertilization
Fertilization of ova and development takes place in test tube
Fertilization takes place in uterus while development takes place in test tube
Fertilization of ova takes place in test tube which development of embryo occur in uterus

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