Draw the Dichotomous key for only the following species: Bacillus subtilis, Bacillus Megaterium, Bacillus cereus, Micrococcus.Luteus, E.coli, Serratia Marcescens, Enterobacter aerogenes Based on their colony morphology. Hint: Start the key from the results of gram staining, catalase test, Nitrate reduction test, Bile insulin, spore staining test, lactose, sucrose and glucose fermentation test for their accurate identification.

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Q: Lactose fermentation

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Nutrient Growth Medium

It is a culture medium or nutrient broth for all kinds of microorganisms to grow properly and create their colony. This matrix provides support to increase the population of microbes through the method of cell proliferation. It is regarded as the food material for those organisms. It is a type of in vitro mechanism, in which the development of life is processed outside the host body. It can be solid, semi-solid, or liquid in nature. Different kinds of cells develop in different types of media.