Blood platelets are found in $.......$.

Give the origin of Red blood cells.

$A$ patient has type $A$ blood and needs a blood transfusion. Type $A$ blood is not available. Which of the following blood types could be substituted without causing harm to the patient?

What is the primary role of bone marrow in mammals?

Match the following:

Column-$I$	Column-$II$ and Column-$III$
$X$. $RBC$	$R$. Lack of nucleus,$A$. $5-5.5$ Million
$Y$. Monocytes	$P$. Nucleated,$C$. $6-8\%$
$Z$. Eosinophil	$Q$. Granulocyte,$B$. $2-3\%$

Find out the wrong match.