Home
Class 12
BIOLOGY
Assertion: Placenta is combined structur...

Assertion`:` Placenta is combined structure of fetal tissure and maternal tissue.
Reason`:` Placenta formation is completed before 6 weeks.

A

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

B

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

C

If Assertion is True but the Reason is False .

D

If both Assertion & Reason are False.

Text Solution

Verified by Experts

The correct Answer is:
C
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

Assertion : Placenta is combined structure of foetal tissue & maternal tissue Reason : Placenta formation is completed before 6 weeks of pregnancy .

Assertion : Placenta is connected to the fetus by an umbilical cord. Reason : Fetal components of placenta are derived from endometrium.

Assertion : Placenta is contra-deciduate and even the fetal placenta is absorbed in mole. Reason : Mole's egg contain abundant yolk in ooplasm

Assertion:Excess consumption of alcohol results in damage to liver Reason : It promotes formation of fatty tissue in the liver

Assertion . Pili are tubular structures present in bacteria which help in conjugation Reason. Formation of pili is controlled by F^(+) or fertility factor.

Assertion . Pili are tubular structures present in bacteria which help in conjugation Reason. Formation of pili is controlled by F^(+) or fertility factor.

Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is the fundamental structural and functional unit of all living organisms. Reason: Anything less than a complete structure of a cell does not ensure independent living.

[A] : Placenta is a tissue in eutherian mam- mals that has both embryonic and maternal tissue. [R]: In mammals, foetal components of the placenta derive from trophoblast.

Assertion Mother can pass on syphilis bacteria to their developing foetus. Reason Placenta can become permeable to some pathogens.

Assertion: Placenta in addition to connection with mother and foetus is ductless gland. Reason: It releases human gonadotrophins.

ALLEN-REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH -Exercise-IV (Assertion & Reason)
  1. Assertion: In post natal life, oocyte development occurs in mature fol...

    Text Solution

    |

  2. Assertion: Placenta is combined structure of fetal tissure and materna...

    Text Solution

    |

  3. Assertion : Corpus albicans is an inactive structure which is found in...

    Text Solution

    |

  4. Assertion : Menarche starts around the age of puberty . Reason : Af...

    Text Solution

    |

  5. Assertion : Corpus luteum is present in proliferative phase of menstru...

    Text Solution

    |

  6. Assertion : During embrynic stage testes descend down and at the time ...

    Text Solution

    |

  7. Assertion : After ovulation ruptured graafian follicle transforms into...

    Text Solution

    |

  8. Assertion : After fertilization corpus luteum is stable till parturiti...

    Text Solution

    |

  9. Assertion : Ovulation occurs on the 14^(th) day of menstrual cycle in ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |