Which one of following factors is directly proportional to oxygen carrying capacity of haemoglobin:

Explanation

Option [A] the greater the carbon dioxide the lesser the capacity to carry oxygen, as Co2 increases more H+ ions are produced in blood,decreasing the Ph subsequently decreasing affinity of haemoglobin for oxygen(inversely proportional)Option[b] With the increase in temperature the ability of haemoglobin to carry oxygen decreases (inversely Proportional)Option [C] With the increase in Ph the affinity of haemoglobin for oxygen increases as there are lesser H+ ions produced due to less amount of Co2 resulting in lesser O2 being dissociated from the Hb molecule. ( directly proportional with increase in Ph Hb molecules carries more oxygen)Option[d] Light has no effect on haemoglobin's affinity for oxygen