Question

State briefly the difference between white blood cells and the red blood cells.

Answer 1

Hint: As we know that Red blood cells help in storage of haemoglobin and White blood cells act as a defence system against foreign particles and infection. WBCs produce proteins called antibodies which fight against the pathogens. In blood RBCs make up the volume up to 45-50%. WBCs are part of the immune system.

Complete answer:
Red Blood Cells (RBCs):
They are known as Erythrocytes and store haemoglobin which helps in binding of oxygen or carbon dioxide molecules.
Haemoglobin is composed of iron which on combining with oxygen gives reddish colour. The function of RBC is to transport Nutrients and hormones throughout the body.
The life span of RBCs is 100-120 days and then they are eliminated through the circulatory system.
White Blood Cells (WBCs):
They are known as Leukocytes and they defend the body against infections and foreign particles.
The life span of WBCs is 12-20 days and then they get destroyed in the lymphatic system.

RBCs- Red blood cells	WBCs- White blood cells
They are also known as Erythrocytes.	They are also known as Leukocytes.
Their life span is about 120 days.	Their lifespan is about 12-20 days.
RBCs appear in red colour.	WBCs are colourless.
RBCs are of only one type.	WBCs are found in different types.
They help in transporting respiratory gases.	They help in producing antibodies.
The main component of RBC is haemoglobin.	The main component of WBC is antibodies.
In the human body RBCs are around 36-50%.	In the human body WBCs are around 1%.

Note:
Red blood cells are also known as Erythrocytes and White blood cells are also known as Leukocytes. RBCs are produced in red bone marrow and WBCs are produced in spleen. Low count of RBC causes Anemia and WBC results in Leukopenia. Formation of RBC is erythropoiesis and WBC is leukopoiesis.