This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Streptococcus pneumonia produces which type of hemolysis - 
Select and explain. 
A. Alpha, B. Beta, C. Gamma, D. Any of the above
A: Alpha
Answer: A: Alpha 
Explanation: Ans. is 'a' i.e., Alpha [Ref: Ananthanarayan 9th/e p. 220-221 & 8th/e p. 218, 219)o Streptococci have been categorised into three varieties based on their growth in 5% blood agar pour plate cultures:-StreptococciAlpha (a)Beta (b)Gamma (g)Greenish discolouration with partial hemolysis around colonies eg - Str. Pneumonia Str. viridansColourless zone of complete hemolysis eg - Str-pyogenes Str. agalactiae Str. equisimilisNo hemolysis eg- Enterococci