Carbon dioxide cannot be transported with haemoglobin.

Answer

### Step-by-Step Solution:

1. **Understanding Hemoglobin**: Hemoglobin is a red-colored iron-containing protein found in red blood cells (RBCs). Its primary function is to transport oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs.

2. **Oxygen Transport**: Hemoglobin binds to oxygen to form oxyhemoglobin. Approximately 97% of oxygen in the blood is transported in this form, while the remaining 3% is dissolved in plasma.

3. **Carbon Dioxide Transport**: Carbon dioxide (CO2) is also transported in the blood, and it can be carried in three different forms:
- About 20-25% of CO2 is transported bound to hemoglobin, forming carbaminohemoglobin.
- Approximately 70% of CO2 is converted to bicarbonate ions (HCO3-) and transported in this form.
- The remaining 7% is dissolved directly in the plasma.

4. **Evaluating the Statement**: The statement claims that carbon dioxide cannot be transported with hemoglobin. This is incorrect because a significant portion (20-25%) of CO2 is indeed transported bound to hemoglobin.

5. **Conclusion**: Therefore, the statement is false. Carbon dioxide can be transported with hemoglobin, contrary to what the statement suggests.