The buffer salts present in the blood are

Select the correct statement/s regarding blood groups in human.
$i$. Some genetically determined blood group systems are $ABO$, $Rh$, $Duffy$, $Lewis$, $Bombay$ blood group etc.
$ii$. Three types of agglutinogens are present on surface of human $RBCs$ such as $A$, $B$ and $D$.
$iii$. Individuals with blood group "$AB$ $Rh$ $+ve$" have $A$, $B$ and $D$ antigens on the surface of their $RBCs$ and both antibodies 'a' and 'b' in their plasma.
$iv$. Haemolytic disease of Newborn occurs when mother with $Rh$ $-ve$ blood group conceives $Rh$ $-ve$ foetus.
$v$. Individuals with '$AB$' blood group are called universal donors while those with '$O$' blood group are called universal acceptors, with reference to blood transfusion.

The haemoglobin content per $100 \ ml$ of blood of a normal healthy human adult is

In which of the following aspects does serum differ from blood?

Antibody formation and immunity production is done by a protein called globulin present in the

Match the columns:

Column-$I$ (Blood group)	Column-$II$ (Antibody)
$A$. $A$	$P$. $b$
$B$. $B$	$Q$. $a$
$C$. $AB$	$R$. $nil$
$D$. $O$	$S$. $a$ and $b$