Home
Class 12
BIOLOGY
A: continued self pollination checks inb...

A: continued self pollination checks inbreeding depression
R: pollen release and stigma receptivity are synchornised

A

if both assetion A reason are ture and the reason is the correct explanation of the assertion then mark

B

if both assertion & reason are ture and the reason is not the correct explanation of the assertin then mark

C

if assertion is true statement but reason is false then mark

D

if both assertion and reason are flase statements then mark

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    AAKASH INSTITUTE|Exercise Assignment (SECTION C)|90 Videos

  • RESPIRATION IN PLANTS

    AAKASH INSTITUTE|Exercise Assignment (Section D)|10 Videos

  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    AAKASH INSTITUTE|Exercise Assignment (Section - D)|10 Videos

Similar Questions

Explore conceptually related problems

Continued self pollination result in

Continued self pollination results in

Which of the following is an outbreeding device ? a. If pollen release and stigma receptivity are not synchronised. b. If the anther and stigma are placed at different positions so that pollen cannot come in contact with the stigma of the same flower. c. Self-incompatibilty which prevents self-pollen (from the same plant) from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil. d. Production of the unisexual flower

Which of the following is correct to check the inbreeding depression?

The type of pollination which cannot bring genetically same types of pollens on stigma is

The type of pollination which brings genetically different types of pollen on the stigma is

In some plants , pollen release and stigma receptivity are not synchronized . Stigma becomes receptive much before the release of pollen. This is known as :

AAKASH INSTITUTE-SEXUAL REPRODUCTION IN FLOWERING PLANTS -Assignment (SECTION D)
  1. A: Each cell fo the sporogenous tissue is capable of giving rise to a ...

    Text Solution

    |

  2. A: In sporoderm pecitocellulosic layer is surrounded by sproropolleni...

    Text Solution

    |

  3. A: The gerative cell comes to lie freely in the cytoplasm of the tube ...

    Text Solution

    |

  4. A: Restitutional nucleus can be observed in endothecium cells R: End...

    Text Solution

    |

  5. A: chalazal vacuole is present in the help cell of embryo sac R: Pol...

    Text Solution

    |

  6. A: Formatin of mature male gametophyte requires one meiotic and one mi...

    Text Solution

    |

  7. A: filiform apparauts guides the pollen tube into the synergids R: I...

    Text Solution

    |

  8. A: Geitonogamy helps in maintaining homozygosity and superiority of t...

    Text Solution

    |

  9. A: Initial growth of pollen tube takes places on expenditure of food p...

    Text Solution

    |

  10. A: Eight cells of octant stage in dicot embryogeny are made by 2 verti...

    Text Solution

    |

  11. A: Triple fusion is associated with the sexual reproduction inall sper...

    Text Solution

    |

  12. A: Anatropous ovule is resupinate ovule R: The body of ovule is comp...

    Text Solution

    |

  13. A: More than one pollen tubes can enter an embryo sac R: Double fert...

    Text Solution

    |

  14. A: hybird seed have to eb produced every year because seeds collected ...

    Text Solution

    |

  15. A: Growth of male gametophyte is completed over the female reproductiv...

    Text Solution

    |

  16. A: certain proteins of pollen orgin identifies the compatible stigam ...

    Text Solution

    |

  17. A: Tetrapid gametophyte can be produced form tetraploid sporophyte by...

    Text Solution

    |

  18. A: continued self pollination checks inbreeding depression R: pollen...

    Text Solution

    |

  19. A: Complete radicle is not produced by hypobasal tier of octant embryo...

    Text Solution

    |

  20. A: Apomicitic embryo is asexual mode of reproduction R: it prevents ...

    Text Solution

    |