Which of the following cells does not exhibit phagocytic activity ?

Options

A. Monocytes
B. Neutrophil
C. Basophil
D. Macrophage

Explanation

To determine which of the following cells does not exhibit phagocytic activity, we will analyze each cell type mentioned in the options.

### Step-by-Step Solution:

1. **Understanding Phagocytosis**:
- Phagocytosis is a specific process where certain cells engulf and digest foreign particles, such as bacteria or food particles. This is a crucial function of the immune system.

2. **Analyzing the Cell Types**:
- **Monocytes**:
- These are the largest type of leukocytes (white blood cells) and constitute about 10-20% of the total white blood cell count.
- Monocytes are known to be phagocytic, meaning they can engulf and digest pathogens.

- **Neutrophils**:
- Neutrophils are the most abundant type of white blood cells and play a significant role in the immune response.
- They are also phagocytic, actively engulfing bacteria and other foreign substances.

- **Basophils**:
- Basophils are present in the least amount among leukocytes and are primarily involved in inflammatory responses and blood clotting.
- They do not exhibit phagocytic activity, as their main function is not to engulf pathogens but to release histamine and other chemicals during allergic reactions and inflammation.

- **Macrophages**:
- Macrophages are derived from monocytes and are highly effective phagocytes. They engulf and digest pathogens and cellular debris.
- Like monocytes, they are phagocytic in nature.

3. **Conclusion**:
- Among the options provided, the only cell type that does not exhibit phagocytic activity is **Basophils**.

### Final Answer:
The cell that does not exhibit phagocytic activity is **Basophils**.