Home
Class 12
BIOLOGY
[A]: Spore mother cells within the anthe...

[A]: Spore mother cells within the anther pollen sacs form four haploid pollen grains.
[R]: Spore mother cells divide meiotically to form four haploid pollen grains.

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

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTION|247 Videos

  • Plant Physiology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|91 Videos

Similar Questions

Explore conceptually related problems

[A]: One diploid embryo sac mother cell develops within the nucellus of the ovule. [R]: Embryo sac mother cell divides meioti- cally and one of the cells produced becomes the haploid embryo sac.

A stamen with two anther lobes and four pollen sacs is called

Pollen grain is related to embryo sac as

Mention the ploidy of the following: a) Megaspore mother cell. b) Microspore mother cell. c) Pollen grain. d) Ovum

TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The colour of flowers in Bougainvillia is due to the coloured bra...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. Assertion : Many visitors to the hills suffer from skin and respirator...

    Text Solution

    |

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

    Text Solution

    |

  10. Assertion. A pollen grain of angiosperm is considered as the male game...

    Text Solution

    |

  11. The number of antipodals cells in the matured embryo sac is

    Text Solution

    |

  12. Assertion : In collateral vascular bundles phloem is situated toward ...

    Text Solution

    |

  13. [A]: The secondary pholem consititutes a less poriment part of the tre...

    Text Solution

    |

  14. [A] : The narrow band of meristemetic tissue present between pholem an...

    Text Solution

    |

  15. [A]: The inner most distinict layer of the cortex is called endomermi...

    Text Solution

    |

  16. [A]: Gramineous type of stomata are found in Gramineae and Cyperaceae....

    Text Solution

    |

  17. [A]: lntercellular spaces are found in meristematic cells [R]: The m...

    Text Solution

    |

  18. [A]: Monocot stem has collateral open vascu- lar bundle. [R]: Open ...

    Text Solution

    |

  19. [A]: Root system in hydrophytes is poorly de- veloped. [R]: The con...

    Text Solution

    |

  20. [A]: Aerenchyma is a characteristic of litho- phyte. [R]: It is a sp...

    Text Solution

    |