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

  • A
    cyanobacteria
  • B
    archaebacteria
  • C
    chemosynthetic autotrophs
  • D
    heterotrophic bacteria

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Which group of Archaebacteria is found in extremely salty areas?

Biochemical resemblance is generally used for the identification of which group of individuals?

Match the following:
Column-$I$ (Group of bacteria)Column-$II$ (Their shape)
$a.$ Coccus$(i)$ Rod-shaped
$b.$ Bacillus$(ii)$ Spherical
$c.$ Spirillum$(iii)$ Spiral
$d.$ Vibrio$(iv)$ Comma-shaped

Which process is a type of reproduction in $E. coli$?

Cells of $Nostoc$ are

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