Home
Class 12
BIOLOGY
In angiosperm pollen grains are dehisced...

In angiosperm pollen grains are dehisced at

A

4 celled stage

B

mostly at 2 and sometimes at 3 celled stage

C

3 celled stage

D

pollen tube stage

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • RESPIRATION IN PLANTS

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|194 Videos

  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    TRUEMAN BIOLOGY|Exercise MCQ|220 Videos

Similar Questions

Explore conceptually related problems

Pollen grains are developed in

Pollen grains are nongreen due to

Winged pollen grains are present in

In tissue culture medium, the embryoids formed from pollen grains are due to

Angiosperms show

Pollen grains of Pinus are

Pollen grains of Pinus are

In angiosperms, pollen tube liberates its male gametes into:

In gymnosperms and angiosperms the pollen tube carries the male gamete to the site of fertilization and thus does not require water for fertilization. It is referred as

In Pinus, pollen grains develop inside

TRUEMAN BIOLOGY-SEXUAL REPRODUCTION IN FLOWERING PLANTS-MULTIPLE CHOICE QUESTIONS
  1. Pollen tube is made up of

    Text Solution

    |

  2. The intine of a pollen grain is mainly made up of

    Text Solution

    |

  3. In angiosperm pollen grains are dehisced at

    Text Solution

    |

  4. In dicots, at how many places exine is absent in the pollen grain ?

    Text Solution

    |

  5. Which one is larger nucleus in pollen grain ?

    Text Solution

    |

  6. The exine of a pollen grain is composed of one of the most resistant ...

    Text Solution

    |

  7. Genotypically the pollen grains produced inside the anther belong to 1...

    Text Solution

    |

  8. Germ pore is the area where exine is

    Text Solution

    |

  9. A plant root has 16 chromosomes , so

    Text Solution

    |

  10. Sculpturing of exine of pollen is important in

    Text Solution

    |

  11. Ovule is technically equivalent to 1. megasporangium with one megaspor...

    Text Solution

    |

  12. Ovule is attached to the placenta by a stalk known as 1. funicle 2. ...

    Text Solution

    |

  13. Collar like outgrowth arising from the base of ovule and forming is a ...

    Text Solution

    |

  14. In tenuinucellate type of ovule

    Text Solution

    |

  15. Crassinucellate ovule shows: 1. Developed nucellus 2. Partially dev...

    Text Solution

    |

  16. When ovule is straight with funiculus, embryo sac, chalaza and microp...

    Text Solution

    |

  17. Ovule is inverted (resupinates at 180^(@)) with body fused to funicle,...

    Text Solution

    |

  18. Ovule of Opuntia is coiled and turn at more kthan 360^(@) angle, i...

    Text Solution

    |

  19. Female gametophyte (megagametophyte of aniosperms) is represented b...

    Text Solution

    |

  20. The female gametophyte (embryo sac) of a typical dicot (Polygonum) at...

    Text Solution

    |