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प्रश्न
Blue green algae fix _________ directly from air to enhance fertility of soil.
उत्तर
Blue green algae fix atmospheric nitrogen directly from air to enhance fertility of soil.
Explanation:
Plants and animals cannot take atmospheric nitrogen directly. Certain bacteria and blue-green algae present in the soil fix nitrogen from the atmosphere and convert it into compounds. Once nitrogen is converted into these usable compounds, it can be utilised by plants from the soil through their root systems.
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संबंधित प्रश्न
How is nitrogen replenished in atmosphere.
Describe nitrogen cycle.
Very Short Answer Question:
What is denitrification?
Nitrogen is a greenhouse gas.
Write the role of nitrogenase enzyme in nitrogen fixation?
Match Column - I with Column - II.
| Column - I | Column - II | ||
| (a) | Nitrococcus | (i) | Denitrification |
| (b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
| (c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
| (d) | Nitrobacter | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below.
The bacteria present in the root nodules of leguminous plants is ______.
In the Nitrification process, the ammonium compounds are oxidised to soluble ______.
Draw a neat flow chart of the Nitrogen cycle. Briefly explain the various processes involved in the nitrogen cycle.
Consider the following statements. Which of the statements given below is incorect?
