Question

Enumerate the structural difference between white blood cells and red blood cells.

Answer 1

RBC 

1. They do not have nucleus at maturity

2. They possess haemoglobin and are red

3. They help in transport of respiratory gases.

4. They are about 5 million/ mm3 of blood.

5. Life span 120 days

6. In the embryonic stage the RBC are formed in the live and spleen. But after birth, they are formed in the red bone marrow. The process of formation of RBC is known as erythropoiesis.

WBC

1. They have a large characteristic nucleus

2. They are colourless as they have no pigment

3. They help in defence mechanism

4. They are about 7000/mm3 of blood

5. WBC have short life span of 5-21 days

6. WBC are formed in the red bone marrow. The process of formation of WBC is known as leucopoiesis.