Home
Class 12
BIOLOGY
Some pollen grains cannot germinate on s...

Some pollen grains cannot germinate on stigmatic surface due to the loss of viability.
Name the factors influence the viability of pollen.

Text Solution

Verified by Experts

Temperature & humidity
Promotional Banner

Topper's Solved these Questions

  • SAY 2018 QUESTION PAPER

    MAXIMUM PUBLICATION|Exercise EXAMPLE|4 Videos

  • STRATEGIES FOR ENHACEMENT IN FOOD PRODUCTION

    MAXIMUM PUBLICATION|Exercise EXERCISE|89 Videos

Similar Questions

Explore conceptually related problems

Pollen grains of rice and wheat lose their viability in....... minutes of their release.

Assertion: To compensate the uncertainties and associated loss of pollen grains during pollination by abiotic agents, the flowers produce enormous amount of pollen when compared to the number of ovules available for pollination. Reason: Pollen grains coming in contact with the stigma is a chance factor in both wind and water pollination.

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-incompatibility 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

MAXIMUM PUBLICATION-SEXUAL REPRODUCTION IN FOLLOWING PLANTS-EXERCISE
  1. Typical angiosperm embryo sac is 7 celled and 8 nucleate. This conditi...

    Text Solution

    |

  2. Pollen allergy that causes chronic respiratory disorders in men like a...

    Text Solution

    |

  3. Some pollen grains cannot germinate on stigmatic surface due to the lo...

    Text Solution

    |

  4. Some pollen grains cannot germinate on stigmatic surface due to the lo...

    Text Solution

    |

  5. Pollen tube growth occurs through the stylar region and reach micropyl...

    Text Solution

    |

  6. Pollen grains of many plants are found to be allergic. Do they have ...

    Text Solution

    |

  7. Pollen grains of many plants are found to be allergic. Give examples...

    Text Solution

    |

  8. Zygote development leads to the formation of embryo. Name the nutrit...

    Text Solution

    |

  9. Zygote development leads to the formation of embryo. What will be th...

    Text Solution

    |

  10. Suppose you are the given four flowers namely maize, vallisneria, sunf...

    Text Solution

    |

  11. A close relationship exist between a species of moth and the plant Yuc...

    Text Solution

    |

  12. Coconut and groundnut are oil yielding crops. Point out the difference...

    Text Solution

    |

  13. Seeds are formed in angiosperms when male and female gametes get fused...

    Text Solution

    |

  14. Seeds are formed in angiosperms when male and female gametes get fused...

    Text Solution

    |

  15. In market, seedless grapes are high priced than seeded grapes. Give th...

    Text Solution

    |

  16. Plant A with combined desired characters that are inherited from paren...

    Text Solution

    |

  17. If the diploid chromosome number of a plant is 24. Find out the number...

    Text Solution

    |

  18. Pollination is aided by biotic and abiotic agents. Identify the type o...

    Text Solution

    |

  19. Give the technical terms for the following Produce seeds without fer...

    Text Solution

    |

  20. Give the technical terms for the following Persistent nucellus

    Text Solution

    |