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प्रश्न
With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true.
पर्याय
Nitrogenase may require oxygen for its functioning
Nitrogenase is MO- Fe protein
Leg-hemoglobin is a pink coloured pigment
Nitrogenase helps to convert N2 gas into two molecules of ammonia
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उत्तर
Nitrogenase may require oxygen for its functioning
Explanation:
Nitrogenase is highly sensitive to molecular oxygen (O2) and thus requires anaerobic conditions. Nodules have adaptations that ensure that the enzyme is protected from O2. To protect nitrogenase, the nodule contains an O2-scavenger celled leghaemoglobin.
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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?
What are the steps involved in formation of a root nodule?
In some plants, like soyabean, fixed nitrogen is exported into the transpiration stream 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
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Name one non-symbiotic nitrogen fixing prokaryote.
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Name the most crucial enzyme found in root nodules for N2 fixation? Does it require a special pink coloured pigment for its functioning? Elaborate.
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.
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Give the biochemical events occurring in the root nodule of a pulse plant. What is the end product? What is its fate?
