Home
Class 12
BIOLOGY
Assertion (A): Menopause refers to the a...

Assertion (A): Menopause refers to the absence of menstruation during pregnancy.
Reason (R): Ovulation occurs during menstrual phase.

A

R explains A.

B

A is right R is wrong.

C

A and R are right. R does not explains A.

D

Both A and R are wrong.

Text Solution

Verified by Experts

Both A and R are wrong.
Promotional Banner

Topper's Solved these Questions

  • HUMAN REPRODUCTION

    FULL MARKS|Exercise Additional questions (2-marks questions)|29 Videos
  • HUMAN REPRODUCTION

    FULL MARKS|Exercise Additional questions (3-marks questions)|22 Videos
  • HUMAN REPRODUCTION

    FULL MARKS|Exercise Higher Order Thinking Skills (HOTs) Questions|4 Videos
  • Human health and diseases

    FULL MARKS|Exercise Additional questions - Higher order thinking skills(HOTs)Questions|3 Videos
  • MICROBES IN HUMAN WELFARE

    FULL MARKS|Exercise Higher Order Thinking Skill (HOTs) Questions|4 Videos

Similar Questions

Explore conceptually related problems

Menstruation does not occur during pregnancy give reason.

Menstrual cycle ceases during pregnancy .

Assertion : Metabolism refers to the sum of chemical reaction that occur within living organisms. Reason : Metabolic reactions occur simultaneously inside living organisms.

Assertion (A): Syngamy refers to the fusion of two haploid gametes. Reason (R): Syngamy leads to zygote formation.

Assertion (A): Social forestry refers to management of forests and afforestation on barren lands. Reason (R): Afforestation involves the cutting of trees.

Menstrual cycle ceases during pregnancy. (True/False)

Assertion (A): Alcohol consumption during pregnancy is not desirable. Reason (R): Alcohol causes physical and mental defects in the offspring.

Assertion: All copulations do not lead to the fertilisation and pregnancy. Reason: Fertilisation can occur only if the ovum and sperms are transported simultaneously to the ampullary isthmic junction.

Assertion (A): Diapause is carried out to overcome abiotic stress. Reason (R): Animals become inactive during winter.

FULL MARKS-HUMAN REPRODUCTION-Additional Questions (1 Marks Questions)
  1. Assertion (A): The acrosome of the sperm cell contains sperm lysin. ...

    Text Solution

    |

  2. Assertion (A): Human ovum is non-cleidoic Reason (R): Human ovum doe...

    Text Solution

    |

  3. Assertion (A): Menopause refers to the absence of menstruation during ...

    Text Solution

    |

  4. Assertion (A): Cervix is common site of ectopic pregnancies Reason (...

    Text Solution

    |

  5. Which of the following contributes to the seminal plasma? (i) Cowper...

    Text Solution

    |

  6. Organ of copulation in human female is...

    Text Solution

    |

  7. Identify the gland which is homologous to the Cowper's glands of male.

    Text Solution

    |

  8. Find out the proper sequence representing the parts of female reproduc...

    Text Solution

    |

  9. Spermatid - overset(A)to spermatozoa. What does 'A' stands for?

    Text Solution

    |

  10. An adult male produces an average of ................. sperms per day

    Text Solution

    |

  11. Statement (1): During spermiation, the sperms are released into the ca...

    Text Solution

    |

  12. Statement (1): Siamese twins are conjoined twins who are joined during...

    Text Solution

    |

  13. Statement (1): The endometrium acts as transitory endocrine gland secr...

    Text Solution

    |

  14. Statement (1): Human pregnancy lasts for 35 weeks. Statement (2): Dur...

    Text Solution

    |

  15. Statement (1): Menstrual cycle occurs once in every 29 days. Stateme...

    Text Solution

    |

  16. The first ejaculation of the semen in male is called as..........

    Text Solution

    |

  17. Identify the mismatched pair.

    Text Solution

    |

  18. Given below are the extra embryonic membranes of which identify the ou...

    Text Solution

    |

  19. Identify the given figure and select the correct option representing X...

    Text Solution

    |

  20. The entire process of spermatogenesis takes about ............ days

    Text Solution

    |