This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Culture of streptococcus viridans resemble 
Select and explain. 
A. Staphylococcus, B. Streptococcus pyogenes, C. Pneumococcus, D. Streptococcus faecalis
C: Pneumococcus
Answer: C: Pneumococcus 
Explanation: Streptococcus viridans and Streptococcus pneumoniae are alpha hemolytic. On blood agar, after incubation for 18 hours, the colonies are small (0.5-1mm), dome-shaped and glistening, with an area of green discolouration around them, resembling colonies of viridans streptococci. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 224