The main function of lymphocytes is

Options

A. To destroy poisonous substances present in the body
B. To clot the blood at the site of a wound
C. To carry oxygen to different parts of the body
D. To destroy bacteria

Answer

**Step-by-Step Solution:**

1. **Understanding Lymphocytes**: Lymphocytes are a type of white blood cell that play a crucial role in the immune system. They are primarily involved in the body's defense against pathogens.

2. **Analyzing the Options**:
- **Option 1**: "To destroy poisonous substances present in the body." This option is incorrect because while lymphocytes do help in detoxifying certain substances, their primary role is more focused on fighting infections rather than directly destroying all poisonous substances.

- **Option 2**: "To clot the blood at the site of a wound." This option is also incorrect. Blood clotting is primarily the function of platelets and clotting factors in the plasma, not lymphocytes.

- **Option 3**: "To carry oxygen to different parts of the body." This statement is incorrect because the transport of oxygen is mainly the function of red blood cells, specifically through the protein hemoglobin.

- **Option 4**: "To destroy bacteria." This is the correct option. Lymphocytes, particularly T-lymphocytes, are responsible for identifying and destroying invading bacteria and viruses. B-lymphocytes also play a role by producing antibodies that target these pathogens.

3. **Conclusion**: The main function of lymphocytes is to destroy bacteria and other pathogens, making option 4 the correct answer.

**Final Answer**: The main function of lymphocytes is to destroy bacteria.

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