It is known that exposure to carbon monoxide is harmful to animals because

1.  it reduces CO₂ transport

2.  it reduces O₂ transport

3.  it increases CO₂ transport

4. it increases O₂ transport   
        

Mark the incorrect statement in context to oxygen binding to Hb

1.  higher pH

2.  lower temperature

3.  lower pCO₂

4.  higher pO₂

The oxygen haemoglobin dissociation curve will show a right shift in case of:

1. high pCO₂

2. high pO₂

3. low pCO₂

4. less H⁺ concentration