NEET Botany Mineral Nutrition Questions Solved

NEET - 2011

Nitrifying bacteria

(a) convert free nitrogen to nitrogen compounds
(b) convert proteins into ammonia
(c) reduce nitrates to free nitrogen
(d) oxidize ammonia to nitrates

(d) Nitrifying bacteria (one of the chemosynthetic bacteria) oxidise anımonia to nitrites and obtain energy for the preparation of food. This oxidation occurs in two steps. In the first step, ammonia is oxidised to nitrite by nitrite bacteria (e.g., Nitrosomonas and Nitrococcus). In the second step, nitrite is oxidised to nitrate by nitrate bacteria (e.g., Nitrocystis and Nitrobacter)

Difficulty Level:

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