<prompt> Staphylococcus differs from streptococcus by:Coagulase testCatalase testPhosphataseGram negative  <response>: Ans. is b i.e., Catalase testRef: Ananthanarayan, 9the, p. 200 and 8the, p. 196 Coagulase test is used to differentiate the different species of staphylococci staph, aureus, staph, epidermidis. Catalase test is used to differentiate staphylococci from streptococci. Coagulase test cannot be used to differentiate streptococci from staphylococci because certain species of staphylococci are coagulase negative coagulase negative staphylococci as streptococci. 