Which fact suggests that most oxygen is transported from lungs to the tissues combine with haemoglobin rather than dissolved in blood plasma?

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

In the given graph curves $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ represent the relation between partial pressure of oxygen $\left({\mathrm{pO}}_2\right)$ and saturation of haemoglobin with oxygen. If curve $\mathrm{A}$ represents the condition of blood in a regular artery then please select the correct statement from below.

Study the following forms of transport of respiratory gases
A) ${\mathrm{CO}}_2$ as bicarbonates
B) ${\mathrm{O}}_2$ through plasma
C) ${\mathrm{CO}}_2$ as carbamino compounds
D) ${\mathrm{O}}_2$ through $\mathrm{RBC}$
E) ${\mathrm{CO}}_2$ in a dissolved state
Arrange the above in sequence in ascending order based on their percentages.

Match the following?

Study the following oxygen-haemoglobin dissociation curve which explains the effect of pH on the saturation of haemoglobin with oxygen. Find out an option that gives the correct descending order of pH for $\mathrm{x}, \mathrm{y}$ and $\mathrm{z}.$