Nitrification (conversion of NH4+ to NO3⁻) is carried out by:
ANitrosomonas + Nitrobacter (chemoautotrophs)
BRhizobium (the symbiotic N-fixer in nodules)
CPseudomonas (a denitrifier mainly anaerobic)
DAzotobacter (the free-living N-fixer aerobic)
Answer & Solution
Correct answer: A. Nitrosomonas + Nitrobacter (chemoautotrophs)
Nitrification: 2-step process. Nitrosomonas (or Nitrococcus) converts NH4+ → NO2⁻. Then Nitrobacter converts NO2⁻ → NO3⁻. Both are chemoautotrophs (use energy from oxidation).
Related questions
Insectivorous plants like VENUS FLYTRAP and PITCHER PLANT trap insects mainly to obtain:Symptoms of MOBILE mineral deficiency (e.g., N, P, K) first appear in:The main DRIVING FORCE for upward water + mineral transport in tall trees is:The genus of bacteria forming symbiotic root nodules in LEGUMES is:The enzyme used by NITROGEN-FIXING bacteria to convert N₂ to NH3 is:The technique of growing plants in nutrient solution WITHOUT soil is called:Yellowing of leaves due to lack of chlorophyll is called:Macronutrients in plants are required: