Which organ is considered as the "Graveyard of $RBCs$" where most of them are destroyed by macrophages?

The $\text{WBCs}$ which make up the maximum count amongst leucocytes are $:-$

Which of the following is essential for the process of blood clotting?

Which one of the following is a hereditary character of blood?

$A$ blood test of a person suspected of having anemia shows large,immature,nucleated,hemoglobin-deficient erythrocytes. Which of the following substances should be included in their diet to alleviate these symptoms?

The blood glucose level is commonly expressed as: