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The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as:

  • Option 1)

    Cyanobacteria

  • Option 2)

    Archaebacteria

  • Option 3)

    Chemosynthetic autotrophs

  • Option 4)

    Heterotrophic bacteria

 

Answers (3)

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As learnt 

Heterotrophic bacteria are most abundant in nature. Many of them have a significant impact on human affairs. These are helpful in making curd from milk (e.g., Lactobacillus sp.), production of antibiotics (e.g., Streptomyces sp.) and fixing nitrogen in legume roots (e.g, Rhizobium spe).


Option 1)

Cyanobacteria

This option is incorrect

Option 2)

Archaebacteria

This option is incorrect

Option 3)

Chemosynthetic autotrophs

This option is incorrect

Option 4)

Heterotrophic bacteria

This option is correct

Posted by

prateek

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option 4

Posted by

surendra dessai

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1

 

Posted by

gaurav

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