This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Physiology
Increase oxygen delivery to tissues in response to increased CO2 is- 
Select and explain. 
A. Bohr effect, B. Haldane Effect, C. Hamburger effect, D. Chloride shift
A: Bohr effect
Answer: A: Bohr effect 
Explanation: Ans. (a) Bohr effect(Ref: Ganong, 25th ed/p.641)The decrease in O2 affinity of hemoglobin when pH of blood falls (PCO2 rises) is called the Bohr effect. This leads to release of oxygen at tissues