Oxygen in carried by :

Options

A. Leucocytes
B. Erythrocytes
C. Platelets
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about which cells carry oxygen in the body. We need to identify the correct type of cells from the given options.

2. **Analyzing the Options**:
- **Option 1: Leucocytes**: These are white blood cells. Their primary function is to defend the body against infections and diseases, not to carry oxygen. Therefore, this option is incorrect.

- **Option 2: Erythrocytes**: These are red blood cells. They contain a protein called hemoglobin, which binds to oxygen in the lungs and transports it to the tissues throughout the body. This is the correct option.

- **Option 3: Platelets**: These are cell fragments involved in the process of blood clotting. They do not carry oxygen, making this option incorrect.

- **Option 4: None of these**: Since we have identified erythrocytes as the correct answer, this option is also incorrect.

3. **Conclusion**: After analyzing all the options, the correct answer is that oxygen is carried by erythrocytes (red blood cells).

**Final Answer**: Oxygen is carried by erythrocytes (red blood cells).

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