Home
Class 12
BIOLOGY
(A) : IgE is important in the allergic r...

(A) : IgE is important in the allergic response.
(R) : It attaches to the surface of basophils and mast cells.

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:
A
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

After the reactio is over between adsorbed reactants, it is important to create space for the other reactant molecules to approach the surface and react. The process responsible for this is known as

Assertion (A) : The phenomenon where tumour cells detach and migrate to other parts of the body where they give rise to secondary tumours is called metastsis. Reason (R) : A bnormal antigens on the surface of cell and unusual member of chromosomes cause metastasis. The correct answer is:

During an allergic reaction, the binding of antigens to IgE antibodiess initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are

State the functions of mast cells in allergy response.

Which of the following statements are correct? I. IgM is the first immunoglobulin produced in a primary response to an antigen. II. IgD protects the body fluids and also stimulates phagocytes and complement system. III. IgE acts as mediation in allergic response. IV. IgE protects from inhaled and ingested pathogens thus, protects the body surface. Codes

[A] : The plasmalemmas of animals cells typically have the oligosaccharide chains of their glycolipids and exposed freely on their surfaces . [R] : These play important roles in immunological responses , in cell-cell adhesion and identification of cell surface changes.

(A):IgG is the most important long-acting antibody. (R) : It plays a major role in allergic reaction.

[A]: Maximum transpiration occurs in meso- phytes than xerophytes. [R]: In mesophytes stomata are found on both surfaces of leaves and guard cells show frequent movements

During an allergic reaction, substances called …………………………….. are released by the mast cells.

GRB PUBLICATION-MICROBES IN HUMAN WELFARE-Assertion-Reason Type Questions
  1. (A):IgG is the most important long-acting antibody. (R) : It plays a...

    Text Solution

    |

  2. (A) : IgA is known as the secretory antibody. (R) : It is found in t...

    Text Solution

    |

  3. (A) : IgE is important in the allergic response. (R) : It attaches t...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |