Mammalian $RBCs$ are..... in shape.

Which blood group is the universal donor and which is the universal recipient?

After examining the blood groups of a husband and wife,the doctor advised them not to have more than one child. The blood groups of the couple are likely to be:

If glucose is to be injected into human blood,the property that must be matched with blood is

In the child of which one of the following couples,Erythroblastosis fetalis is likely to occur?

Match the following columns:

Column-$I$ (Blood Group)	Column-$II$ (Can donate blood to)
$P$. $A$	$I$. $AB$
$Q$. $B$	$II$. $B, AB$
$R$. $AB$	$III$. $A, B, AB, O$
$S$. $O$	$IV$. $A, AB$