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  Red Blood Corpuscles (RBC)

White Blood Cells (WBC)

Image

   
Colour Red

Colourless

Size

Around 7.2 micrometer (smaller than WBC)

10 to 20 micrometer

Number

4 to 6 million per mm 3 (More in number than WBC)

6000 to 9000  per mm 3

Shape

Biconcave (Curved inward at the center on both sides)

Round to Amoeboid (One portion protruding out)

Nucleus

Absent (thus called corpuscles - minute particle regarded as the basic constituent of matter )

Present

Hemoglobin

Present

Absent

Organelles

Most are absent

Present

Types

Only 1 type

5 types; Neutrophils, Eosinophils, Basophils, Monocytes, Lymphocytes

Life span

120 days

Few hours to 4 days

Role

They transport gases, mainly Oxygen

They help in defence and immunity

 

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo