Which WBC are the most abundant and least in number respectively ?

Options

A. Monocyte and lymphocyte
B. Neutrophils and basophils
C. Acidophils and monocyte
D. Basophils and neutrophils

Answer

To answer the question regarding which white blood cells (WBCs) are the most abundant and least in number, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of WBCs**:
- There are five major types of white blood cells: neutrophils, lymphocytes, monocytes, eosinophils, and basophils.

2. **Determine the Most Abundant WBC**:
- Among these types, neutrophils are known to be the most abundant white blood cells. They typically make up about 60-70% of the total WBC count in the blood.

3. **Determine the Least Abundant WBC**:
- On the other hand, basophils are recognized as the least abundant white blood cells. They account for about 0.5-1% of the total WBC count.

4. **Conclusion**:
- Therefore, the most abundant WBC is neutrophils, and the least abundant WBC is basophils.

5. **Final Answer**:
- The answer to the question is: Neutrophils are the most abundant, and basophils are the least in number.