They are phagocytic in nature

Options

A. Neutrophil, monocyte and basophil
B. Neutrophil , monocyte and macrophage
C. Neutrophil , basophil and macrophage
D. Acidophil, basophil and lymphocyte.

Answer

To determine which cells are phagocytic in nature, we will analyze the different types of leukocytes mentioned in the question. Phagocytosis is the process by which certain cells engulf and digest foreign particles, such as bacteria and dead cells, as part of the immune response.

### Step-by-Step Solution:

1. **Understand Phagocytosis**:
- Phagocytosis refers to the engulfment of foreign particles or antigens by certain immune cells. These cells are known as phagocytes.

2. **Identify the Types of Cells**:
- The options provided include:
- Neutrophils
- Monocytes
- Basophils
- Macrophages
- Acidophils (Eosinophils)
- Lymphocytes

3. **Evaluate Neutrophils**:
- Neutrophils are a type of granulocyte and constitute about 70% of total white blood cells (WBCs). They are highly phagocytic and play a crucial role in the immune response by engulfing pathogens.

4. **Evaluate Monocytes**:
- Monocytes are agranulocytes that also exhibit phagocytic activity. When they migrate from the bloodstream into tissues, they differentiate into macrophages, which are even more effective at phagocytosis.

5. **Evaluate Basophils**:
- Basophils are granulocytes that are primarily involved in inflammatory and allergic responses. They do not have a significant role in phagocytosis.

6. **Evaluate Macrophages**:
- Macrophages are derived from monocytes and are highly phagocytic. They are essential for engulfing and digesting cellular debris and pathogens.

7. **Evaluate Acidophils (Eosinophils)**:
- Acidophils, or eosinophils, are granulocytes that primarily respond to parasitic infections and are involved in allergic reactions. They do not perform phagocytosis as their main function.

8. **Evaluate Lymphocytes**:
- Lymphocytes (including B cells and T cells) are primarily involved in the adaptive immune response, particularly in antibody production and cell-mediated immunity. They do not engage in phagocytosis.

9. **Conclusion**:
- The cells that are phagocytic in nature from the provided options are:
- Neutrophils
- Monocytes
- Macrophages

### Final Answer:
The correct answer is: **Neutrophils, Monocytes, and Macrophages are phagocytic in nature.**

---