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Crop Production and Management — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCrop Production and Management1 Mark
MCQ
what do you mean by 'nitrification'?
  • A
    Conversion of air nitrogen into nitrites and nitrates by nitrogen microbes.
  • ✓
    Conversion of dead decaying matter into ammonia and then into nitrites and nitrates by nitrifying microbes.
  • C
    Conversion of nitrites and nitrates from decaying organic matter into gaseous nitrogen by denitrifying microbes.
  • D
    All the above.
✓

Answer

Correct option: B.
Conversion of dead decaying matter into ammonia and then into nitrites and nitrates by nitrifying microbes.
Conversion of dead decaying matter into ammonia and then into nitrites and nitrates by nitrifying microbes, called 'nitrification'. Conversion of air nitrogen into nitrites and nitrates by nitrogen microbes, called 'nitrogen fixation'. Conversion of nitrites and nitrates from decaying organic matter into gaseous nitrogen by denitrifying microbes, called 'denitrification'.

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