Which component present in blood helps in the transport of oxygen as well as carbon dioxide?

Options

A. Haemoglobin
B. Plasma
C. Cytoplasm
D. Heparin

Explanation

To answer the question of which component in blood helps in the transport of oxygen as well as carbon dioxide, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components of Blood**: Blood consists of several components including red blood cells (RBCs), white blood cells, plasma, and platelets.

2. **Focus on the Function of Red Blood Cells (RBCs)**: The primary function of RBCs is to transport gases. They are specifically designed to carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

3. **Understand the Role of Hemoglobin**: Hemoglobin is a protein found in red blood cells. It binds to oxygen in the lungs and releases it in the tissues. Hemoglobin also binds to carbon dioxide, which is then transported back to the lungs for exhalation.

4. **Analyze the Options Given**:
- **A. Hemoglobin**: This is the correct answer as it is the component that carries both oxygen and carbon dioxide.
- **B. Plasma**: While plasma does transport some gases, it is not the primary component for oxygen and carbon dioxide transport.
- **C. Cytoplasm**: This is not a component of blood; it is the fluid inside cells.
- **D. Parin**: This appears to be a misspelling or incorrect term; it is not relevant to blood components.

5. **Conclusion**: Based on the analysis, the correct answer is **A. Hemoglobin**.

### Final Answer:
The component present in blood that helps in the transport of oxygen as well as carbon dioxide is **hemoglobin**.

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