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 identifying the mismatch with respect to formed elements in blood, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the formed elements of blood**: The formed elements of blood include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Each of these has specific functions.

2. **Evaluate Option A: Thrombocytes (Platelets)**:
- **Function**: Thrombocytes are involved in blood clotting.
- **Analysis**: This is a correct match as thrombocytes play a crucial role in hemostasis (the process of stopping bleeding).

3. **Evaluate Option B: Eosinophils**:
- **Function**: Eosinophils are involved in allergic reactions.
- **Analysis**: This is also a correct match. Eosinophils respond to allergens and are known to accumulate at sites of allergic reactions.

4. **Evaluate Option C: Monocytes**:
- **Function**: The statement claims that monocytes are directly involved in phagocytosis.
- **Analysis**: This is a mismatch. Monocytes differentiate into macrophages, which are the cells that perform phagocytosis. Therefore, monocytes are not directly involved in this process.

5. **Evaluate Option D: Basophils**:
- **Function**: Basophils are involved in inflammatory reactions.
- **Analysis**: This is a correct match. Basophils release mediators such as histamines during inflammatory responses.

6. **Conclusion**: Based on the evaluations, the mismatch is found in Option C, where monocytes are incorrectly stated to be directly involved in phagocytosis.

### Final Answer:
The mismatch with respect to formed elements is **Option C: Monocytes**.