Which one of the following plasma proteins is involved in the coagulation of blood?

Which of the following is an agranulocyte?

On what is the $ABO$ blood grouping based?

Study the diagram given below and identify the cells labelled as $A$, $B$, $C$ and $D$, and choose the correct option.

The source of thromboplastin in human blood is:

Match the different types of leucocytes (Column-$I$) with their percentage of occurrence (Column-$II$) in a healthy adult and choose the correct answer.

Column-$I$	Column-$II$
$A$. Neutrophils	$(i)$ $6-8\%$
$B$. Lymphocytes	$(ii)$ $60-65\%$
$C$. Monocytes	$(iii)$ $0.5-1\%$
$D$. Basophils	$(iv)$ $2-3\%$
$E$. Eosinophils	$(v)$ $20-25\%$