A) Nitrobacter oxidises nitrate to nitrite.
B) Nitrosomonas and Nitrosococcus convert ammonium ions to nitrite.
C) Nitrification reactions are energy consuming reactions.
D) Heterotrophic plants are more directly dependent on the nitrifying bacteria for usable nitrogen than autotrophic plants.
Correct Answer: B
Solution :
[b] Nitrification is the conversion of ammonia into nitrite and nitrates by soil bacteria (nitrifying bacteria). Heterotrophic plants are less dependent on nitrogen obtained from nitrification since they receive some nitrite and nitrate through their parasitic or carnivorous nutritional modes.
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