Home
Class 12
BIOLOGY
The common nitrogen-fixer in paddy field...

The common nitrogen-fixer in paddy fields is

A

Frankia

B

Rhizobium

C

Azospirillum

D

Oscillatoria

Text Solution

Verified by Experts

The correct Answer is:
4
Promotional Banner

Topper's Solved these Questions

  • Living World

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|47 Videos

  • MINERAL NUTRITION

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|386 Videos

Similar Questions

Explore conceptually related problems

The source of nitrogen in Gabriel synthesis of amines is:

Read the following four statements (A-D) (A) Both, photophosphorylation and oxidative phoshorylation involve up hill transport of protons across the membrane (B) In dicot stems, a new cambium originates from the cell of pericycle at the time of secondary growth (C ) Stamens in flowers of Gloriosa and Petunia are polyandrous (D)Symbiotic nitrogen-fixers occur in the free-living state also in soil How many of the above statements are right

How is the presence of cyanobacterial in the paddy fields beneficial to rice crop?

The percentage of nitrogen in urea is about

The oxidation number of nitrogen in hydroxyl - amine is :

The oxidation state of nitrogen in peroxynitric acid is :

Nitrogen fixer soil organisms belong to

Bacterial nitrogen fixation by nitrogen fixing bacteria is

TRUEMAN BIOLOGY-MICROBES IN HUMAN WELFARE -Multiple choice question
  1. Select the correct statement from the following

    Text Solution

    |

  2. which one of the following is not used in organic farming

    Text Solution

    |

  3. The common nitrogen-fixer in paddy fields is

    Text Solution

    |

  4. In the sewage treatement, bacterial flocs are allowed to sediment iin ...

    Text Solution

    |

  5. A prokaryotic autotrophic nitrogen fixing symbiont is found in

    Text Solution

    |

  6. Which one of the following is not a biofertlizer

    Text Solution

    |

  7. Secondary sewage treatment is mainly a

    Text Solution

    |

  8. Which of the following is mainly produced by the activity of anaerobic...

    Text Solution

    |

  9. Ethanol is commercially produced through a particular species of:-

    Text Solution

    |

  10. which one of the following helps in asbsorption of phosphorus ...

    Text Solution

    |

  11. Which one of the following is a wrong matching of a microbe and its in...

    Text Solution

    |

  12. Cyclosporine-A: an immunosuppressive agent is produced by the fungus

    Text Solution

    |

  13. A Bioactive molecule, Cyclosporin-A used as an immuno-suppressive agen...

    Text Solution

    |

  14. The scientific name of Baker's yeast is

    Text Solution

    |

  15. The majority of Baculo viruses are used as biological control agents b...

    Text Solution

    |

  16. The large holes in 'Swiss cheese' are because of

    Text Solution

    |

  17. Blood cholesterol lowering statins are obtained from

    Text Solution

    |

  18. Which organic compound is produced by fermentation and is used to repl...

    Text Solution

    |

  19. Which one of the following is a wrong matching of a microbe and its in...

    Text Solution

    |

  20. Yeast is used in the production of

    Text Solution

    |