Home
Class 12
BIOLOGY
(A) : Allergy is an inappropriate over r...

(A) : Allergy is an inappropriate over reaction of immune system.
(R) : It is treated with drugs that cause vasodilation.

A

If both (A) and (R) are true and (R) is the correct explanation of (A).

B

If both (A) and (R) are true but (R) is not the correct explanation of (A).

C

If (A) is true but (R) is false.

D

If both (A) and (R) are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MICROBES IN HUMAN WELFARE

    GRB PUBLICATION|Exercise Question Based On Ncert Text|9 Videos

  • MENDELIAN INHERITANCE

    GRB PUBLICATION|Exercise Multiple Choice Questions|417 Videos

  • ORGANIC EVOLUTION

    GRB PUBLICATION|Exercise REPRODUCTIVE ISOLATION|159 Videos

Similar Questions

Explore conceptually related problems

HIV causes a complete breakdown of immune system by

Assertion (A) Exposure of ultraviolet rays to human causes the skin cancer, disorder and disrupt the immune system. Reason (R) Carbon tetrachloride is released into air, it rises to atmosphere and deplets the ozone layer.

Cells of immune system that cause pore formation in the surface of plasma membrane

Which cell of immune system cause pore formation at the surface of the plasma membrane

Consider the following statements with repect to allergy. A. Allergy is due to the release of chemicals like heparin and adrenaline from the mast cells. B. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. C. The use of chemicals like anti-histamine, adrenaline and steroids aggravate the symptions of allergy. D. Common examples of allergens are mites in dust, pollens, animals dander, etc.

In the following question a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A): Opioids, also called opiates used to treat pain. Reason (R): Opioids are the drugs which kind to specific opioid receptors present in our central nervous system.

Read the following statements and select the correct option. Statement 1 : The exaggerated response of the immune system to certain antigens present in the environment is called as allergy. Statement 2 : The allergic tendency is genetically passed from the parent to the offspring and is characterised by the presence of large quantities of IgG antibodies in the blood.

GRB PUBLICATION-MICROBES IN HUMAN WELFARE-Assertion-Reason Type Questions
  1. (A) : IgE is important in the allergic response. (R) : It attaches t...

    Text Solution

    |

  2. (A) : Any substance that increase body temperature is called pyrogen. ...

    Text Solution

    |

  3. (A) : Allergy is an inappropriate over reaction of immune system. (R...

    Text Solution

    |

  4. (A) : Hashimoto's disease is an example of auto-immune disease. (R) ...

    Text Solution

    |

  5. (A) : Cyclosporine is an immunosuppressive drug. (R) : it inhibits t...

    Text Solution

    |

  6. (A) : The corneal grafts have a much better chance of success. (R) :...

    Text Solution

    |

  7. (A) : Amphetamine is a systhetic stimulant of CNS. (R) : It is also ...

    Text Solution

    |

  8. (A) : Benzopyrene is a cancer inducing hydrocarbon. (R): It si found...

    Text Solution

    |

  9. (A) : Tobacco smoke is injurious to a pregnant woman. (R) : Nicotine...

    Text Solution

    |

  10. (A) : The alcohol acts on the CNS as a stimulant. (R) : It increase...

    Text Solution

    |

  11. (A) : LSD is one of the most dangerous hallucinogens of modern times. ...

    Text Solution

    |

  12. (A) : Coconut milk is very rich and nutritive drink. (R) : It is in ...

    Text Solution

    |

  13. (A) : Rapid cell divison in an explant can be induced with cytokinin. ...

    Text Solution

    |

  14. (A) : Hybridization results in the production of heterozygous individu...

    Text Solution

    |

  15. (A): Mutations are always beneficial. (R): Generally it produces off...

    Text Solution

    |

  16. (A) : Meristem culture is used to produce disease free plants. Spiru...

    Text Solution

    |

  17. (A) : Meristem culutre is used to produce disease free plants. (R): ...

    Text Solution

    |

  18. (A) : Animal husbandry deals with the care and breading of livestock. ...

    Text Solution

    |

  19. (A) : Buffaloes are bette than cows. (R) : They are more resistant t...

    Text Solution

    |

  20. (A) : Goat is also called 'poor mans's cow'. (R) : It yields only a ...

    Text Solution

    |