Home
Class 12
BIOLOGY
Assertion : Sperm formation continues ev...

Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the age of fifty years .
Reason : Human male having the longer life span than the female .

A

(a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

(b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

(c) If Assertion is True but the Reason is False .

D

(d) both Assertion & Reason are False.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that sperm formation continues in old men, while the formation of ova ceases in women around the age of fifty. This is true. In men, spermatogenesis (the process of sperm formation) continues throughout life, although it may slow down with age. In contrast, women experience menopause around the age of fifty, which marks the end of ovum (egg) production. 2. **Understanding the Reason**: The reason provided is that human males have a longer lifespan than females. This statement is not universally true. While some studies may suggest that men have a longer reproductive lifespan, overall life expectancy can vary based on numerous factors, including health, lifestyle, and environmental conditions. Therefore, this reason is not a valid explanation for the assertion. 3. **Evaluating the Relationship**: The assertion is true, but the reason is false. The reason does not logically explain the assertion about sperm and ovum formation. 4. **Conclusion**: Since the assertion is true and the reason is false, the correct answer is that the assertion is correct, but the reason is incorrect. ### Final Answer: - The assertion is true, and the reason is false.
Promotional Banner

Topper's Solved these Questions

  • REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH

    ALLEN|Exercise Exercise -I (Conceptual Questions)|25 Videos

  • REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH

    ALLEN|Exercise Exercise-II (AIPMT 2008)|2 Videos

  • REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH

    ALLEN|Exercise Exercise-III(A) (Ncert Based Questions)|112 Videos

  • REPRODUCTIVE HEALTH

    ALLEN|Exercise S|19 Videos

  • RESPIRATION IN PLANTS

    ALLEN|Exercise Diagram Based question|5 Videos

Similar Questions

Explore conceptually related problems

Given below are four statement (A-D) each with one of two blanks .Select the option which correctly fill up the blanks in two statements A The human male ejaculates about (i) million sperms during a cooitus . Out of which for normal fertility at teast (iii) percent sperms must have normal shape and size B. A primary spermatocyte completes (i) meiotic division leading to the formation of two equal haploid cells called (i) C. Spermatogenesis starts at the age of (i) due to significant increase in the secretion of (ii) a hypothalamic hormone D. Oogenesisi is initiated during embryonic development and at puberty only (i) primary follicles are left in each overy

Assertion : Marriageable age of Indian females and males is 18 years and 21 years, respectively. Reason : Under normal conditions, a girl child will release around 450 ova in her lifetime.

Carbon -14 used to determine the age of organic material. The procedure is absed on the formation of C^(14) by neutron capture iin the upper atmosphere. ._(7)N^(14)+._(0)n^(1) rarr ._(6)C^(14)+._(1)H^(1) C^(14) is absorbed by living organisms during photosynthesis. The C^(14) content is constant in living organism. Once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of C^(14) in the dead being falls due to the decay, which C^(14) undergoes. ._(6)C^(14)rarr ._(7)N^(14)+beta^(c-) The half - life period of C^(14) is 5770 year. The decay constant (lambda) can be calculated by using the following formuls : lambda=(0.693)/(t_(1//2)) The comparison of the beta^(c-) activity of the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation of the material from the living cycle. The method, however, ceases to be accurate over periods longer than 30000 years. The proportion of C^(14) to C^(12) in living matter is 1:10^(12) . What should be the age of fossil for meaningful determination of its age ?

Carbon -14 used to determine the age of organic material. The procedure is absed on the formation of C^(14) by neutron capture iin the upper atmosphere. ._(7)N^(14)+._(0)n^(1) rarr ._(6)C^(14)+._(1)H^(1) C^(14) is absorbed by living organisms during photosynthesis. The C^(14) content is constant in living organism. Once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of C^(14) in the dead being falls due to the decay, which C^(14) undergoes. ._(6)C^(14)rarr ._(7)N^(14)+beta^(c-) The half - life period of C^(14) is 5770 year. The decay constant (lambda) can be calculated by using the following formuls : lambda=(0.693)/(t_(1//2)) The comparison of the beta^(c-) activity of the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation of the material from the living cycle. The method, however, ceases to be accurate over periods longer than 30000 years. The proportion of C^(14) to C^(12) in living matter is 1:10^(12) . A nuclear explosion has taken place leading to an increase in the concentration of C^(14) in nearby areas. C^(14) concentration is C_(1) in nearby areas and C_(2) in areas far away. If the age of the fossil is determined to be T_(1) and T_(2) at the places , respectively, then

ALLEN-REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH -Exercise-IV (Assertion & Reason)
  1. Assertion : Ovulation occurs on the 14^(th) day of menstrual cycle in ...

    Text Solution

    |

  2. Assertion : From day 10 to 17 of the mentrual cycle is called fertile ...

    Text Solution

    |

  3. Assertion : Sperm formation continues even in old men but formation of...

    Text Solution

    |

  4. Assertion : The testes are situated outside the abdominal cavity withi...

    Text Solution

    |

  5. Assertion : Formation of sperm takes place in seminiferous tubules of ...

    Text Solution

    |

  6. Assertion : In the human the temperature of scrotum is 2-2.5^(@)C less...

    Text Solution

    |

  7. Assertion : Vasectomy is considered in permanent sterilization method...

    Text Solution

    |

  8. Assertion : Zona pellucida is glycoproteinous in nature and dissolved ...

    Text Solution

    |

  9. Assertion : The menstrual flow results due to breakdown of endometrial...

    Text Solution

    |

  10. Assertion : During follicular phase , the primary follicles in the ova...

    Text Solution

    |

  11. Assertion : The level of FSH & LH attain a peak level in the middle of...

    Text Solution

    |

  12. Assertion : Regular cyclic menstruation is an indicator of normal repr...

    Text Solution

    |

  13. Assertion : The acrosomal secretions of sperm , help it in entering in...

    Text Solution

    |

  14. Assertion : The nucleus of sperm fuses with the nucleus of ovum , befo...

    Text Solution

    |

  15. Assertion : Females not participate in the determination of the sex of...

    Text Solution

    |

  16. Assertion : hCG , hPL and relaxin are produced in women only during pr...

    Text Solution

    |

  17. Assertion : If fertilization does not occur than the corpus luteum be...

    Text Solution

    |

  18. Assertion : The mammary glands of the female starts producing milk jus...

    Text Solution

    |

  19. Assertion : All Eutherian are placental mammals . Reason : All place...

    Text Solution

    |

  20. Assertion : Primary spermatocytes of testes are haploid . Reason : P...

    Text Solution

    |