Question

Reaction carried out by N₂ fixing microbes include

1. \[\ce{2NH3 + 3O2 -> 2NO^{-}2 + 2H^{+} + 2H2O (i)}\]
2. \[\ce{2NO^{-}2 + O2 -> 2NO^{-}3 (ii)}\]

Which of the following statements about these equations is not true

विकल्प

• Step (i) is carried out by Nitrosomonas or Nitrococcus

• Step (ii) is carried out by Nitrobacter

• Both steps (i) and (ii) can be called nitrification

• Bacteria carrying out these steps are usually photoautotrophs

Answer 1

Bacteria carrying out these steps are usually photoautotrophs

Explanation:

Bacteria that assist in nitrogen fixation are heterotrophs, and that is why they enter into the symbiotic association.