Select the mismatch w.r.t formed elements.

Options

A. Thrombocytes - Clotting of blood
B. Eosinophils - Allergic reactions of the body
C. Monocytes - Directly participate in phagocytosis
D. Basophils - Inflammatory reactions of the body

Answer

To solve the question of selecting the mismatch with respect to formed elements in blood, we can follow these steps:

### Step 1: Understand the formed elements of blood
Blood consists of three main types of formed elements:
1. **Red Blood Cells (RBCs)** - Responsible for the transport of gases (oxygen and carbon dioxide).
2. **White Blood Cells (WBCs)** - Involved in the immune response and can be further classified into:
- **Agranulocytes**: Monocytes and Lymphocytes
- **Granulocytes**: Neutrophils, Eosinophils, and Basophils
3. **Platelets (Thrombocytes)** - Involved in blood clotting.

### Step 2: Analyze the options provided
We need to evaluate each option to determine if it correctly describes the function or classification of the formed elements.

1. **Thrombocytes, clotting of blood**: This is correct as thrombocytes (platelets) are indeed involved in blood clotting.

2. **Eosinophils, allergic reactions of the body**: This is also correct as eosinophils are known to be involved in allergic reactions and responses to parasitic infections.

3. **Monocyte, directly participate in phagocytosis**: This is incorrect. Monocytes do not directly perform phagocytosis; they differentiate into macrophages, which are the cells that actually carry out phagocytosis.

4. **Basophils, inflammatory reactions of the body**: This is correct as basophils release histamine and other substances that mediate inflammatory responses.

### Step 3: Identify the mismatch
From the analysis, the third option regarding monocytes is the mismatch because it inaccurately states that monocytes directly participate in phagocytosis.

### Conclusion
The mismatch with respect to formed elements is:
**Option C: Monocyte, directly participate in phagocytosis.**

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