Which type of white blood cells are associated with the secretion of histamine and the anticoagulant heparin?

How many statements is/are incorrect?
$(A)$ Blood is a special epithelial tissue
$(B)$ Albumins are needed for clotting
$(C)$ Plasma with the clotting factors is called serum
$(D)$ Plasma is a straw coloured, viscous fluid

What happens when calcium is removed from freshly collected blood?

Persons with $AB$ blood group can accept blood from persons of ........... blood group and the antibody in their blood plasma is.......

The colloidal osmotic pressure of blood is primarily maintained by which plasma protein?

Blood platelets release