Identify the given curve.

Carbon monoxide combines with haemoglobin to form . . . . . . .

Identify the correct group of statements:
$I.$ Oxygen is carried by haemoglobin
$II.$ Oxygen is carried by carbonic anhydrase
$III.$ $CO_{2}$ is carried by haemoglobin
$IV.$ $SO_{2}$ is carried by haemoglobin
$V.$ Only oxygen is transported by the blood
$VI.$ Only $CO_{2}$ is transported by the blood
Choose the correct option.

The concentration of carbonic acid does not increase in the blood due to the presence of which of the following?

When the affinity of $O_2$ and $CO_2$ for haemoglobin is compared,it is:

$CO_{2}$ dissociates from carbaminohemoglobin in the alveoli when: