Home
Class 12
BIOLOGY
[A] : Nucleus of pollen grain divides me...

[A] : Nucleus of pollen grain divides meiotically and form a pollen tube and a generative nucleus .
[R] : Nucleus of pollen grain divides meiotically to form pollen tube and generative nucleus.

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

Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTION|252 Videos

  • Plant Physiology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|91 Videos

Similar Questions

Explore conceptually related problems

Study of pollen grain is called

Pollen grains of Pinus are

Pollen grains of Pinus are

Pollen tubes show:

The intine of a pollen grain is mainly made up of

In general, pollen tube enter the ovule through

Pollen tube is made up of

In Pinus, pollen grains develop inside

Movement of pollen tube towards embryo sac is

Pollen grains are developed in

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A] : Synergids play an important role in directing the pollen tube gr...

    Text Solution

    |

  2. Assertion. In apomixis , plants of new genetic sequence are produced. ...

    Text Solution

    |

  3. [A] : Nucleus of pollen grain divides meiotically and form a pollen tu...

    Text Solution

    |

  4. [A]: Incompatibility is a gene physiological process. [R]: Moderate...

    Text Solution

    |

  5. [A]: The pollen sterility has been attributed to the malfunctioning of...

    Text Solution

    |

  6. [A]: The three cells of the egg apparatus are arranged in a triangular...

    Text Solution

    |

  7. [A]: Pollen grains from male parent are mostly transferred to the stig...

    Text Solution

    |

  8. [A]: The two sperms cells in a pollen tube often change their shape. ...

    Text Solution

    |

  9. [A] : Synandrous condition is found in curcurbits. [R] : The male fl...

    Text Solution

    |

  10. [A]: In certain plants the stem that twins around the support is hard ...

    Text Solution

    |

  11. [A]: Leaf in Daucus carota is decompound. [R]: Saprophytic and paras...

    Text Solution

    |

  12. [A]: The colour of flowers in Bougainvillia is due to the coloured bra...

    Text Solution

    |

  13. [A]: The endosperm contains the triploid number of chromosomes. [R]:...

    Text Solution

    |

  14. [A]: Spore mother cells within the anther pollen sacs form four haploi...

    Text Solution

    |

  15. [A]: One diploid embryo sac mother cell develops within the nucellus o...

    Text Solution

    |

  16. [A]: Triple fusion results in veg~tative fertiliza- tion of angiosperm...

    Text Solution

    |

  17. [A]: Pollination is essential for fertilization. [R]: Abscission or...

    Text Solution

    |

  18. [A]: The biennial plants live for two years. [R]: They flower in bo...

    Text Solution

    |

  19. Assertion (A): Many visitors to the hills suffer from skin and respira...

    Text Solution

    |

  20. [A]: Endosperm is tripolid in angiosperms. [R]: In gymnosperms, it ...

    Text Solution

    |