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प्रश्न
Name four types of bacteria involved in nitrogen cycle.
उत्तर
Four types of bacteria involved in the nitrogen cycle:
(a) Nitrogen-fixing bacteria:
Examples: Azotobacter and Rhizobium
(b) Putrefying bacteria involved in ammonification
(c) Nitrifying bacteria:
Examples: Nitrosomonas and Nitrobacter
(d) Denitrifying bacteria:
Example: Pseudomonas
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संबंधित प्रश्न
Long Answer Question:
Explain biological nitrogen fixation with example.
Why should we avoid standing dose to a tuberculosis patient while he/she is coughing?
Polio drops are not given to children suffering from diarrhoea. Why?
Free-living soil bacteria such as Pseudomonas sp. are responsible for the ______ process in the nitrogen cycle.
In the Nitrification process, the ammonium compounds are oxidised to soluble ______.
The atmosphere is a rich source of ______.
Assertion (A): Plants and animals can utilize atmospheric nitrogen.
Reason (R): The atmosphere is a rich source of nitrogen.
What is nitrification?
Match column I with Column II.
| Column I | Column II |
| A Acidic | (i) Phenylalanine (Phe) |
| B Neutral | (ii) Cysteine (Cys) |
| C Aromatic | (iii) Valine (Val) |
| D S(Sulphur) containing | (iv) Asparagine (Asn) |
Select the correct answer from the options given below.
Match the following:
| Column A | Column B (Organisms) | ||
| (1) | Symbiotic nitrogen fixation | (a) | Nitrobacter |
| (2) | Denitrification | (b) | Cyanobacteria |
| (3) | Free living nitrogen fixers | (c) | Rhizobium |
| (4) | Nitrification | (d) | Paracoccus |
