Differences between RBC and WBC

1. RBC stands for red blood cells. WBC stands for white blood cells.
2. They are also known as erythrocytes. They are also known as leucocytes.
3. They are small biconcave and non nucleated. They are comparatively larger, amoeboid and nucleated
4. Much more in number. Much less in number.
5. Around 5 million rbc’s per cubic mm of blood. Around 11000 wbc’s per cubic mm  of blood.
6. Red in colour due to the presence of haemoglobin. Non-pigmented and hence colourless.
7. Life span is about 120 days. Life span is 5-21 days.
8. Formed in bone marrow of vertebrae, ribs and pelvis. Formed in bone marrow, lymph gland, thymus, spleen.
9. Are called oxygen carriers. Are called phagocytes.
10. Carry oxygen from the lungs to the body tissues and help in respiration. Play an important role in body’s defence system by engulfing bacteria.
11. No types are present. Various types are present.
12.  Move only in blood vessels. Move in blood vessels and lymph vessels.
13. Formation process called erythropoiesis. Formation process called leucopoiesis.
14.  Form stacks or aggregation known as rouleaux. Do not form rouleaux.
15. Decreased condition is called anaemia. Decreased condition is called leukopenia.
16. Increased condition is called polycythemia. Increased condition is called leukocytosis and leukaemia.
17. Accounted for 40-45% of total blood volume. Accounted for 1% of total blood volume.

Blood Cell - The Definitive Guide | Biology Dictionary

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i) https://www.toppr.com/guides/biology/difference-between/rbc-and-wbc/

ii) https://pediaa.com/difference-between-red-blood-cells-and-white-blood-cells/

Differences between RBC and WBC