Question

Discuss the basis of classification of bacteria.​

Answer 1

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The basis of classification of bacteria are given below :-




-- on the basis of optimum temperature requirement for growth




• on the basis of optimal pH for growth

•  on the basis of salt concentration

•  on the basis of gaseous requirement

 • on the basis of morphology

•  on the basis of gram staining

• on the basis of flagella

• on the basis of spore




EXPLANATION :-

Classification of bacteria on the basis of mode of nutrition

1. Phototrops:

Those bacteria which gain energy from lightPhototrops are further divided into two groups on the basis of source of electron.Photolithotrops: these bacteria gain energy from light and uses reduced inorganic compounds such as H2S as electron source. Eg. Chromatium okeniiPhotoorganotrops: these bacteria gain energy from light and uses organic compounds such as succinate as electron source.



2. Autotrops:

Those bacteria which uses carbondioxide as sole source of carbon to prepare its own food.Autotrops are divide into two types on the basis of energy utilized to assimilate carbondioxide. Ie. Photoautotrops and chemoautotropsPhotoautotrops: they utilized light to assimilate CO2. They are further divided into two group on the basis of electron sources. Ie. Photolithotropic autotrops and Photoorganotropic autotropsChemoautotrops: they utilize chemical energy for assimilation of CO2