Analogy type question:
$(1)$ Carbonic anhydrase : High concentration in $RBC$ :: In blood plasma : .......

Haemoglobin $(Hb)$ is a

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 majority of carbon dioxide produced by our body cells is transported to the lungs as

Select the correct option for the transport of $O_2$. (Plasma : RBCs)

In which form is $CO_2$ mostly carried by blood?