<prompt> Classification of staphylococcus is based on -Catalase testCoagulase testMannitol fermentationOptochin sensitivity  <response>: Ans. is b i.e., Coagulase test Medically important staphylococci that causing human disease are divided into two groups1. Coagulase positive: Staphylococcus aureus.2. Coagulase negative: Staphylococcus epidermidis, Staphylococcus haemolyticus, Staphylococcus saprophyticus. 