Home
Class 12
BIOLOGY
Explain the process of pollination in Va...

Explain the process of pollination in Vallisneria .How is it different in water- lily , which is also an aquatic plant ?

Text Solution

Verified by Experts

In Vallisneria , the female flower reach the surface of water by the long stalk and the male flowers or pollen grains are released into the surface of water they are carried by water currents reaching the famale flowers and the stigma. In water - liye pollunation takes place through wind or insect , female flower emerges above the surface of water and gets pollinated.
Promotional Banner

Topper's Solved these Questions

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SECTION-D|50 Videos
  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SECTION -A|12 Videos
  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SECTION-B|85 Videos
  • SAMPLE PAPER 2019

    XII BOARDS PREVIOUS YEAR|Exercise Section E Part B|3 Videos

Similar Questions

Explore conceptually related problems

Explain the process of food transport in plants.

Explain water pollination in detail with its types.

Explain the process of heterosis. How is it different from inbreeding depression?

How is the process of pollination is different from fertilisation?

Explain the process to transcription in prokaryotes .How is the process different in eukaryotes ?

In Vallisneria the pollinating agent is water.

XII BOARDS PREVIOUS YEAR-XII BOARDS-SECTION-C
  1. Name the male accenssory glands in human and write their functions.

    Text Solution

    |

  2. Describe the onter - relationship between productivity , gross primary...

    Text Solution

    |

  3. Explain the process of pollination in Vallisneria .How is it different...

    Text Solution

    |

  4. What is disturbence in Hardy- Weinberg genetic equilibrium indicaitive...

    Text Solution

    |

  5. Different animals respond to changes in their surroundings in differen...

    Text Solution

    |

  6. (a) Name the organic material exine of the pollen grain is made up of....

    Text Solution

    |

  7. Differentiate between divergent and convergent evolution. Give one exa...

    Text Solution

    |

  8. Name two hormones that are constituents of contraceptive pills. Why do...

    Text Solution

    |

  9. Are humming birds and fish regulators or conformers ? Give reasons in ...

    Text Solution

    |

  10. (a) What is green revolution ? Mention the steps that led to it (b) ...

    Text Solution

    |

  11. Expand 'ELISA'. Why is this method preferred over conventional methods...

    Text Solution

    |

  12. State the objective with which a dairy farm is set up .Describe the es...

    Text Solution

    |

  13. Write in what context did Darwin use the terms ' fitness', survival an...

    Text Solution

    |

  14. Name the specific enzyme responsible for nucleotide polymerisation in ...

    Text Solution

    |

  15. Write the causative agent of filariasis in human. Mention its mode of ...

    Text Solution

    |

  16. (a) Name a terminal methode to prevent pregnancy in humans. (b) Desc...

    Text Solution

    |

  17. (a) Do all pollen grains remain viable for the same length of time ? S...

    Text Solution

    |

  18. GM plants are useful in many ways. How would you convince farmers to g...

    Text Solution

    |

  19. Name and explain the technique that helps in the separation of DNA fra...

    Text Solution

    |

  20. When Morgan conduced dihybrid cross on Drosophila like Mendel did with...

    Text Solution

    |