Which one of the following white blood cells occurs in the greatest proportion in human blood?

If you suspect an antibody deficiency in a person,which of the following would you look for as definitive evidence?

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,$B$. $2-3\%$

Which one of the following is correct?

Which of the following does not participate in the process of blood clotting?

Which of the following statements are correct?

$A$. Basophils are most abundant cells of the total WBCs

$B$. Basophils secrete histamine, serotonin and heparin

$C$. Basophils are involved in inflammatory response

$D$. Basophils have kidney shaped nudeus

$E$. Basophils are agranulocytes

Choose the correct answer from the options given below: