Question

Formation of blood corpuscles is known as
A. Haemolysis
B. Rouleaux
C. Haemopoiesis
D. Phagocytosis

Answer 1

Hint: Blood cells are formed in the bone marrow. It is a spongy tissue present inside some bones. It has stem cells present in it. These blood-forming stem cells can grow into all 3 types of blood cells – red cells, white cells and platelets.

Complete Answer:
- Haemolysis is the destruction of red blood cells so that the hemoglobin which is the oxygen-carrying pigment is released into the surrounding medium.
- Rouleaux is the piling up of red blood cells, caused by extra or abnormal proteins in the blood that decrease the normal distance between the red cells .
- Haemopoiesis is the process of formation of blood cells. In a healthy adult person,nearly $10^{11}$–$10^{12}$ new blood cells are formed daily in order to maintain normal levels.
- Phagocytosis means the eating process of the cell.

Thus, the correct answer is option C.

Note: The stem cells make copies of themselves, and they also form mature blood cells. When blood cells are fully mature and functional, they leave the bone marrow i.e. their source and are freed into the blood.