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What is the function of leghaemoglobin in the root nodule of a legume? - Biology

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प्रश्न

What is the function of leghaemoglobin in the root nodule of a legume?

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उत्तर

Leghaemoglobin is a red-coloured pigment present in the root nodules of a legume. It is also considered an oxygen molecule scavenger.

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Metabolism of Nitrogen - Biological Nitrogen Fixation
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पाठ 12: Mineral Nutrition - Exercises [पृष्ठ ६५]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
पाठ 12 Mineral Nutrition
Exercises | Q 8. | पृष्ठ ६५

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

  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


With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true.


A farmer adds Azotobacter culture to soil before sowing maize. Which mineral element is being replenished?


Rice fields produce an important greenhouse gas. Name it.


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.

  1. Can we artificially induce the property of nitrogen fixation in a plant – leguminous or non-leguminous?
  2. What kind of relationship is observed between mycorrihiza and pine trees?
  3. 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


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