Some species of Streptococcus,when grown on blood agar,produce an incomplete hemolysis with the formation of a greenish zone around the colony; this is referred to as ______.

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Alpha-hemolysis is characterized by an incomplete hemolysis of red blood cells on blood agar. The greenish zone around the colony is indicative of the partial breakdown of hemoglobin and the formation of methemoglobin. Beta-hemolysis is a complete hemolysis, resulting in a clear zone around the colony, while gamma-hemolysis is the absence of hemolysis. Since the Streptococcus species produces an incomplete hemolysis, it is most likely to be alpha-hemolysis.

Some Species of Streptococcus,when Grown on Blood Agar,produce an Incomplete