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प्रश्न
Nitrogen is a greenhouse gas.
पर्याय
True
False
उत्तर
Nitrogen is a greenhouse gas. - false
Correct statement:
Atmosphere is a rich source of nitrogen and contains about 78% nitrogen.
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संबंधित प्रश्न
Blue green algae fix _________ directly from air to enhance fertility of soil.
Draw diagram of Nitrogen cycle.
Very Short Answer Question:
Name the bacteria responsible for conversion of nitrite to nitrate.
Match the following.
| Microorganism | Role Played |
| Nitrosomonas | Nitrogen fixation |
| Azotobacter | Ammonification |
| Pseudomonas species | Nitrification |
| Putrefying bacteria | Denitrification |
How do human activities affect nitrogen cycle?
The process of nitrogen-fixation by bacteria does not take place in the presence of
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 blue-green algae that take part in nitrogen fixation are also called ______.
Assertion (A): Plants and animals can utilize atmospheric nitrogen.
Reason (R): The atmosphere is a rich source of nitrogen.
Name any two nitrifying bacteria in soil.
