Question

Find the correct descending order of percentage proportion of leucocytes in human blood

• A. Neutrophils $\to$ Basophils $\to$ Lymphocytes $\to$ Eosinophils $\to$ Monocytes
• B. Monocytes $\to$ Neutrophils $\to$ Lymphocytes $\to$ Eosinophils $\to$ Basophils
• C. Neutrophils $\to$ Lymphocytes $\to$ Monocytes $\to$ Eosinophils $\to$ Basophils
• D. Lymphocytes $\to$ Eosinophils $\to$ Basophils $\to$ Neutrophils $\to$ Monocytes

Answer 1

The correct option is C Neutrophils $\to$ Lymphocytes $\to$ Monocytes $\to$ Eosinophils $\to$ Basophils

Leucocytes, which are also known as white blood cells, are divided into two groups, namely, granulocytes and agranulocytes. The granulocytes include the eosinophils, neutrophils and basophils whereas, the agranulocytes include the monocytes and lymphocytes. In terms of percentage proportion, the neutrophils are found in higher proportion (60-65 percent) when compared to the other WBCs. This is followed by the lymphocytes, which are about 20-25 percent. Monocytes contribute to 6-8 percent of the leucocytes. 2-3 percent of WBCs are the eosinophils. This is followed by the basophils which are very less in number (0.5-1 percent).