Q. Which one of the following is responsible for maintenance of osmotic pressure in blood?
Answer: Albumin
Notes: Albumin is a protein found in the blood plasma, and it plays a crucial role in regulating osmotic pressure. It helps to maintain the balance of fluids between the blood vessels and the surrounding tissues. Albumin exerts an osmotic pressure that prevents the excessive loss of fluid from the blood vessels into the tissues. Fibrinogen, Red Blood Cells, and Platelets have different functions in the blood, but they are not primarily responsible for maintaining osmotic pressure. Fibrinogen is involved in blood clotting, Red Blood Cells are responsible for carrying oxygen, and Platelets play a role in blood clotting as well.