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प्रश्न
A farmer adds Azotobacter culture to soil before sowing maize. Which mineral element is being replenished?
उत्तर
Azotobacter is nitrogen-fixing bacteria in cereal crops like maize. This means it converts free nitrogen in the air to ammonia (NH3) or other related nitrogenous compounds.
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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?
Plants absorb nitrogen as ______.
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as ______.
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
With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true.
Nitrogen fixation is shown by prokaryotes and not by eukaryotes. Comment.
Name one non-symbiotic nitrogen fixing prokaryote.
Complete the equation for reductive amination
\[\ce{->[?] + NH^{+}4 + NADPH ->[][?] glutamate + NADP + H2O}\]
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.
Trace the events starting from the coming in contact of Rhizobium to a leguminous root till nodule formation. Add a note on importance of leg hemoglobin
