Home
Class 12
BIOLOGY
[A]: B-cells are responsible for antibod...

[A]: B-cells are responsible for antibody mediated immunity which directly recognize an antigen and give rise to antibody secreting plasma cells and memory b-cells.
[R]: Immunity can be induced by using vaccines for long- lived active period.

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 and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPLICATION OF BIOTECHNOLOGY

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|122 Videos

  • Biochemistry

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|10 Videos

Similar Questions

Explore conceptually related problems

Antibiodies are produced and secreted by plasma cells. Which of the following organelles must be well developed for effective antibody synthesis?

[A]: For a recipient to receive blood from a donor, the recipient's plasma must not have an antibody that causes the donor's cell to agglutinate. [R]: The possibility of blood clumping does not depend on anti-A or anti-B antibody and blood type

Go through the following statements (i) Androgens are produced by the interstitial cells (ii) Sertoli cells give rise to germ cells (iii). Secretions of male accessory glands constitute the seminal plasma which is rich in fructose, calcium and certain enzymes (iv) The presence or absence of hymen is a very reliable indicator of virginity. Which of these are correct?

Consider the following four statements (i-iv) regarding kidney transplant and select the two correct ones out of these (i) Even if a kidney transplant is proper the recipient may need to take immuno-suppressants for a long time (ii) The cell-mediated immune response is responsible for the graft rejection (iii) The B-lumphocytes are responsible for rejection of the graft (iv) The acceptance or rejection of a kidney transplant depends on specific interferons The correct statements are

Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections? 1. Auto - immune response 2. Humoral immune response 3. Physiological immune response 4. Cell - mediated immune response

In genetic engineering, a DNA segment (gene) of interest, is translated to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors Statement (A) A bacterium (B) Plasmid (C) Plasmodium (D) Bacteriophage

Match the terms listed under column-I with the structrues which they occur given under column-II, choose the answer which gives the correct combination of alphabets of the two columns. {:(" . Coloumn I Column II "),( " (Structrue ) (Occurrence)"),("A Haversian canal p.Kidney "),("B Debdrites q.Cartilage "),("C Sarcolemma r. Muscle "),("D. Chondrocytes s.Nerve cells "),(" t. Bone "),():} .

TRUEMAN BIOLOGY-Applications of Biology -ASSERTION AND REASON
  1. Assertion : There is no chance of transmission of malaria to a man on ...

    Text Solution

    |

  2. [A]: Treatment of malaria by vaccination is rare [R]: Plasmodium do...

    Text Solution

    |

  3. [A]: B-cells are responsible for antibody mediated immunity which dire...

    Text Solution

    |

  4. [A]: lmmunoglobulins or antibodies are specilialized proteins synthesi...

    Text Solution

    |

  5. [A]: Indiscriminate exploitation of economi- cally important wild plan...

    Text Solution

    |

  6. (A]: Cotton is a filling fibre only. [R]: Cotton is a bast fibre

    Text Solution

    |

  7. [A]: Bhojpatra is derived from bark of Betula. [R]: Eucalyptus be...

    Text Solution

    |

  8. [A]: Clove is a flower bud. [R]: Essential oils are known as vola...

    Text Solution

    |

  9. [A]: Black wood is obtained from Dalbergia. [R]: Coffee is mainly...

    Text Solution

    |

  10. [A]: Cocaine is an alkaloid derived from the shrub Cannabis sativa. ...

    Text Solution

    |

  11. [A]: Winged bean is widely cultivated throughout India. [R]: The ...

    Text Solution

    |

  12. [A] : The age-sex structure of human population in countries like Fran...

    Text Solution

    |

  13. [A]: Decrease in mortality would result in decreased population growth...

    Text Solution

    |

  14. Assertion. Death is regarded as the most regulatory process on earth. ...

    Text Solution

    |

  15. [A]: The ideas of Thomas Malthus are more applicable today. [R]: ...

    Text Solution

    |

  16. [A]: Since 1960 s, there is a dramatic increase in human population gr...

    Text Solution

    |

  17. [A]: Oral contraceptive pills are meant for family planning purpose. ...

    Text Solution

    |

  18. [A]: Environment resistance does not limit population growth. [R]...

    Text Solution

    |

  19. [A]: Growth curve is the graphic representation of the total growth ag...

    Text Solution

    |

  20. [A]: Demography is the study of human population growth [R]: Dem...

    Text Solution

    |