The ultimate source of nitrogen is

  • A
    Atmospheric nitrogen
  • B
    Nitrogen present in soil
  • C
    Nitrogen that comes from water
  • D
    Nitrogen fixed by the process of photosynthesis

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Similar Questions

Nitrogen is present in the soil in the form of
$I.$ Nitrates $II.$ Ammonium salts
$III.$ Nitrite $IV.$ None of these

What is the function of $Pseudomonas$ and $Thiobacillus$ in the $N_2$ cycle?

The conversion of ammonia into nitrites and nitrates is called

Conversion of $NH_{3} \rightarrow NO_{2}^{-} \rightarrow NO_{3}^{-}$ is called:

What is the process of conversion of $NH_3$ to $NO_3^-$ by microorganisms called?

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