Home
Class 11
BIOLOGY
Assertion: Necrosis occurs due to defici...

Assertion: Necrosis occurs due to deficiency of Ca, Mg, Cu and K.
Reason: Necrosis is the death of tissue, particularly leaf tissue.

A

If both assertio and reason are true and reason is the correct explanation of assertion

B

if both assertion and reason are true but reason is not the correct explanation of assertion

C

if assertion is true but reason is false

D

if both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Necrosis is the prematrue death of cells in living tissue. It is symptom os a disease. This symptom can occur in any plant tissues such as leaves, petioles, stem, etc. necrosis may appear in small areas and goes up to large areas of plant tissues. The apical necrosis of young leaves extends towards the base along the margins. Necrosis occurs due to deficiency of Ca, Mg, Cu and K.
Promotional Banner

Topper's Solved these Questions

  • LOCOMOTION AND MOVEMENT

    NCERT FINGERTIPS|Exercise Locomotion And Movement|139 Videos

  • MORPHOLOGY OF FLOWERING PLANTS

    NCERT FINGERTIPS|Exercise Morphology Of Flowering Plants|135 Videos

Similar Questions

Explore conceptually related problems

Necrosis to crops is due to the deficiency of

Necrosis in crops is due to the deficiency of

Assertion : Exanthema disease occure due to deficiency of manganese. Reason : Reclamation is a disease of cereals

Death of stem and root tips occurs due to the deficiency of

Necrosis, or death of tissue particularly leaf tissue, is due to the deficiency of

Deficiency of which element is not responsible for death of leaf tissues

In plants a common symptom caused by deficiency of P, K, Ca and Mg is

In plants a common symptom caused by deficiency of P, K, Ca and Mg is

Assertion :- Excess of Mn may induce deficiency of Fe, Mg & Ca. Reason:- Excess of Mn compete with uptake of Fe & Mg and inhibit translocation of Ca to shoot apex.

Assertion :- Connective tissue are mesodermal In origin. Reason :- Nervous tissue is ectodermal in origin.

NCERT FINGERTIPS-MINERAL NUTRITION-Mineral Nutrition
  1. Which one of the following symptoms is not due to manganese toxicity i...

    Text Solution

    |

  2. Reaction carried out by N(2) fixing microbes include 2NH(3)+3O(2)to2...

    Text Solution

    |

  3. With regard to the bilogical nitrogen fixation by Rhizobium in associa...

    Text Solution

    |

  4. Match the element with its associated functions/roles and choose the c...

    Text Solution

    |

  5. Plants can be grown in (Tick the incorrect option)

    Text Solution

    |

  6. Assertion: The technique of growing plants in a nutrient solution is k...

    Text Solution

    |

  7. Assertion: Some essential elements are called structural element of ce...

    Text Solution

    |

  8. Assertion: Plants absorb calcium from soil in the form of calcium ions...

    Text Solution

    |

  9. Assertion: Sulphur is the main constituent of several coenzymes, vitam...

    Text Solution

    |

  10. Assertion: Plants obtain molybdenum in the form of molybdate ions (MoO...

    Text Solution

    |

  11. Assertion: Deficiency symptoms appear when the availability of the ess...

    Text Solution

    |

  12. Assertion: Necrosis occurs due to deficiency of Ca, Mg, Cu and K. Re...

    Text Solution

    |

  13. Assertion: The prominent symptom of manganese toxicity is the appearan...

    Text Solution

    |

  14. Assertion: The movement of ions into or out of the cells is usually ca...

    Text Solution

    |

  15. Assertion: As per carbonic acid exchange theory of mineral salt absorp...

    Text Solution

    |

  16. Assertion: Ammonia is converted into nitrate by soil bacteria like Nit...

    Text Solution

    |

  17. Assertion: Nitrate present in the soil is reduced to nitrogen by the p...

    Text Solution

    |

  18. Assertion: Reduction of nitrogen to ammnia by living organisms is call...

    Text Solution

    |

  19. Assertion: The enzyme nitrogenase is a Mo-Fe protein and catalyses the...

    Text Solution

    |

  20. Assertion: Reductive amination involves the transfer of amino group fr...

    Text Solution

    |