Home
Class 12
BIOLOGY
Assertion: Nitrogen-fixing bacteria of l...

Assertion: Nitrogen-fixing bacteria of legume nodules live in `O_2` depleted cells.
Reason: Leghaemoglobin completely removes `O_2` from the nodule cells.

A

Given below are assertion and reason point out if both are true with reason being correct explanation

B

both true but reason is not correct explanation

C

assertion true but reason is wrong

D

and both wrong

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KINGDOM MONERA (THE PROKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|20 Videos
  • KINGDOM MONERA (THE PROKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|20 Videos
  • KINGDOM FUNGI-MULTICELLULAR DECOMPOSERS

    DINESH PUBLICATION ENGLISH|Exercise CYG|19 Videos
  • KINGDOM PLANTAE OR METAPHYTA

    DINESH PUBLICATION ENGLISH|Exercise CYG|20 Videos

Similar Questions

Explore conceptually related problems

Assertion : Nitrogen fixing enzyme in legume root nodules function at low oxygen concentration. Reason : Low oxygen concentration is provided by leghaemoglobin.

Assertion : Nitrogenase enzyme gets inactivated in presence of oxygen yet N_(2) fixation occurs in aerobic cells of legume nodules. Reason : Laghaemoglobin allows presence of oxygen just sufficient for cellular respiration only.

The N_(2) -fixing bacterium associated with root nodules of legumes is known as

Assertion : Smoking makes oxgyen less available to the body Reason : In presence CO2,O_2 binds less with haemoglobin.

Assertion :- Oxidation number of carbon in CH_(2)O is zero. Reason :- CH_(2)O (formaldehyde) is a covalent compound.

Assertion : O_(2) is paramagnetic. Reason : It has one unpaired electron.

Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is the fundamental structural and functional unit of all living organisms. Reason: Anything less than a complete structure of a cell does not ensure independent living.

Assertion (A) : Electrolysis of hard water produces O_2 and D_2 . Reason (R) :Ordinary hydrogen is called protium.

Assertion: Archaebacteria differ from other bacteria only in structure not, in resistance. Reason: Cell wall of Archebacteria is made upof complex peptidoglycans instead of simple peptioglycane.

Assertion :- Bond order of O_(2) and BN is same . Reason O_(2) and BN are isoelectronic

DINESH PUBLICATION ENGLISH-KINGDOM MONERA (THE PROKARYOTES)-REVISION QUESTIONS FROM CPMPETITIVE EXAMS.
  1. Match the columns and find out the correct combination {:(,"Column...

    Text Solution

    |

  2. Bacterium Pseudomonas is useful as it can

    Text Solution

    |

  3. Assertion: Nitrogen-fixing bacteria of legume nodules live in O2 depl...

    Text Solution

    |

  4. Match the type of bacteria listed in column I with their activity give...

    Text Solution

    |

  5. What is true

    Text Solution

    |

  6. Murein is not found in the cell wall of

    Text Solution

    |

  7. A non -photosynthetic aerobic nitrogen fixing soil bacterium is

    Text Solution

    |

  8. Prokaryotes are characterised by

    Text Solution

    |

  9. Bacteria involved in two -step conversion of ammonia into nitrate are

    Text Solution

    |

  10. Colourless, unicellular, cell wall bound, spherical or rod-shaped micr...

    Text Solution

    |

  11. Nif' gene for nitrogen fixation in cereal crops like wheat jowar etc.,...

    Text Solution

    |

  12. Blue green algae are

    Text Solution

    |

  13. Antibiotics are

    Text Solution

    |

  14. Bacterial flagella is made up of

    Text Solution

    |

  15. A chain of spherical bacteria is called streptococci. When spherical c...

    Text Solution

    |

  16. Cyanobacteria are

    Text Solution

    |

  17. Match the following pairs correctly and choose the right combination ...

    Text Solution

    |

  18. The pigments phycocyanin and phycoerythrin are present in

    Text Solution

    |

  19. Which of the following gene clusters in bacteria is responsible for ...

    Text Solution

    |

  20. Match the columns and bring out correct option of inhibitor and its ef...

    Text Solution

    |