Name the red pigment which carries oxygen in blood.

Options

A. Red blood cells
B. Haemoglobin
C. White blood cells
D. Platelets

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Composition**: Blood is a special type of connective tissue that consists of a liquid part called plasma and formed elements.

2. **Identifying Blood Components**: The formed elements make up about 45% of blood and include white blood cells (WBCs), platelets, and red blood cells (RBCs).

3. **Function of Red Blood Cells**: Red blood cells, also known as erythrocytes, play a crucial role in transporting respiratory gases, particularly oxygen.

4. **Identifying the Red Pigment**: The key component in red blood cells that is responsible for carrying oxygen is a red pigment.

5. **Naming the Red Pigment**: This red pigment is called hemoglobin. Hemoglobin is an iron-containing protein that binds with oxygen, allowing red blood cells to transport it throughout the body.

6. **Conclusion**: Therefore, the red pigment which carries oxygen in blood is hemoglobin.

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