Question

Which of the following statements is not true about blood?

• A. Mature red blood cells are not nucleated.
• B. Blood platelets are involved in the clotting process.
• C. The adult spleen is a site of red blood cell development.
• D. White blood cells are capable of phagocytosing foreign matter.
• E. New red blood cells are constantly developing in the bone marrow.

Answer 1

The correct option is C The adult spleen is a site of red blood cell development.

Mature red blood cells are not nucleated to increase its surface area for carrying oxygen.
Blood platelets like thrombocyte are involved in the clotting process.
Erythropoiesis is the process of production of red blood cells or erythrocytes. This process takes place in the red bone marrow of long bones. Before birth, this process is taken care of by the liver and the spleen but after birth, the process of erythropoiesis is extensively carried out in the bone marrow.
White blood cells are phagocyte of foreign matter.
New red blood cells are constantly developing in the bone marrow.

So, the correct answer is 'The adult spleen is a site of red blood cell development'.