fixing
microbes include
(a) 
?(i)
(b) 
?(ii)
Which of the
following statements about these equations is not true?
(a) Step (i)
is carried out by Nitrosomonas or Nitrococcus
(b) Step
(ii) is carried out by Nitrobacter
(c) Both
steps (i) and (ii) can be called nitrification
(d) Bacteria
carrying out these steps are usually photoautotrophs
Answer:
(d) Option (d) is not
'true because the bacteria involved in the process are not photoautotrophs but
are chemoautotrophs. These bacteria oxidise inorganic substances like 
and 
and use the
released energy hence are called chemoautotrophs.
Simultaneously, they
help in the conversion of ammonia 
to
absorbable form (
and 
) of nitrogen.
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