Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas $(N_2)$ to the atmosphere?

  • A
    Aerobic nitrate oxidation and nitrite reduction
  • B
    Decomposition of organic nitrogen and conversion of dinitrogen to ammonium compounds
  • C
    Enteric fermentation in cattle and nitrogen fixation by Rhizobium in root nodules of legumes
  • D
    Anaerobic ammonium oxidation and denitrification

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Similar Questions

Match the organisms given in Column $I$ to their functions given in Column $II$ and choose the correct option.
Column $I$Column $II$
$A$. Thiobacillus$1$. Free-living nitrogen-fixing cyanobacteria
$B$. Nitrosomonas$2$. Denitrification
$C$. Nostoc$3$. Free-living aerobic nitrogen-fixing bacteria
$D$. Azotobacter$4$. $NH_{3}$ to Nitrite

Codes:
$A \quad B \quad C \quad D$

The process of conversion of complex organic substances into inorganic substances is attributed to which of the following?

Which bacteria is responsible for the reduction of nitrates into nitrogen in soil?

The reaction $2 NH_3 + 3 O_2 \rightarrow 2 NO_2^- + 2 H^+ + 2 H_2O$ is carried out by which of the following microorganisms?

Which of the following is true for nitrogen fixation?

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