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प्रश्न
Reaction carried out by N2 fixing microbes include
- \[\ce{2NH3 + 3O2 -> 2NO^{-}2 + 2H^{+} + 2H2O (i)}\]
- \[\ce{2NO^{-}2 + O2 -> 2NO^{-}3 (ii)}\]
Which of the following statements about these equations is not true
पर्याय
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
उत्तर
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.
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संबंधित प्रश्न
What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in N2 -fixation?
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Nitrogen fixation is shown by prokaryotes and not by eukaryotes. Comment.
A farmer adds Azotobacter culture to soil before sowing maize. Which mineral element is being replenished?
Name one non-symbiotic nitrogen fixing prokaryote.
Rice fields produce an important greenhouse gas. Name it.
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\[\ce{->[?] + NH^{+}4 + NADPH ->[][?] glutamate + NADP + H2O}\]
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We find that Rhizobium forms nodules on the roots of leguminous plants. Also Frankia another microbe forms nitrogen fixing nodules on the roots of non-leguminous plant Alnus.
- Can we artificially induce the property of nitrogen fixation in a plant – leguminous or non-leguminous?
- What kind of relationship is observed between mycorrihiza and pine trees?
- Is it necessary for a microbe to be in close association with a plant to provide mineral nutrition? Explain with the help of one example.
