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प्रश्न
Rice fields produce an important greenhouse gas. Name it.
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उत्तर
CH4 (methane).
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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?
Plants absorb nitrogen as ______.
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as ______.
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
Nitrogen fixation is shown by prokaryotes and not by eukaryotes. Comment.
What is the function of leghaemoglobin in the root nodule of a legume?
Name one non-symbiotic nitrogen fixing prokaryote.
Complete the equation for reductive amination
\[\ce{->[?] + NH^{+}4 + NADPH ->[][?] glutamate + NADP + H2O}\]
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.
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
Give the biochemical events occurring in the root nodule of a pulse plant. What is the end product? What is its fate?
