Which pigment is responsible for the color of plasma?

The blood of an anaemic person contains an unusually large number of immature nucleated $RBCs$. Which of the following would you suggest as a dietary supplement to improve his condition?

Erythroblastosis foetalis is a disease in which

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

Explain the concentration of platelets in human blood.

Which of the following plasma proteins is responsible for maintaining the colloid osmotic pressure of the blood?