Home
Class 10
BIOLOGY
The growth of pollen tubes towards ovule...

The growth of pollen tubes towards ovules is due to

A

hydrotropism

B

chemotropism

C

geotropism

D

phototropism

Text Solution

Verified by Experts

The correct Answer is:
B
Chemicals substances released by the ovules stimulate the growth of pollen tubes towards ovules.
Promotional Banner

Topper's Solved these Questions

  • NEW CHAPTERS AND QUESTIONS BASED ON LATEST TYPOLOGIES INTRODUCED BY CBSE FOR 2021-22 EXAMINATION

    OSWAL PUBLICATION|Exercise CONTROL AND COORDINATION (NCERT EXEMPLAR) (Short Answer Questions)|20 Videos

  • NEW CHAPTERS AND QUESTIONS BASED ON LATEST TYPOLOGIES INTRODUCED BY CBSE FOR 2021-22 EXAMINATION

    OSWAL PUBLICATION|Exercise CONTROL AND COORDINATION (NCERT EXEMPLAR) (Long Answer Questions)|13 Videos

  • NEW CHAPTERS AND QUESTIONS BASED ON LATEST TYPOLOGIES INTRODUCED BY CBSE FOR 2021-22 EXAMINATION

    OSWAL PUBLICATION|Exercise CONTROL AND COORDINATION (NCERT CORNER) (Exercise Questions)|12 Videos

  • MANAGEMENT OF NATURAL RESOURCES

    OSWAL PUBLICATION|Exercise CASE-BASED MCQs|15 Videos

  • NTSE 2019 - 20

    OSWAL PUBLICATION|Exercise (BIOLOGY) WHY DO WE FALL ILL (STAGE - 1)|2 Videos

Similar Questions

Explore conceptually related problems

Growth of pollen tube is

Movement of pollen tube towards ovule is

The growth of the pollen tube towards the ovules is known as

The growth of a pollen tube towards the ovule caused by a sugary substance as stimulus is an example of:

Growth of pollen tube towards embryo sac is

The structure of ovule that directs the growth of pollen tube towards micropyle is called:

Pollen tubes show:

Growth of the pollen tube is

OSWAL PUBLICATION-NEW CHAPTERS AND QUESTIONS BASED ON LATEST TYPOLOGIES INTRODUCED BY CBSE FOR 2021-22 EXAMINATION -CONTROL AND COORDINATION (NCERT EXEMPLAR) (Multiple Choice Questions)
  1. Choose the incorrect statement about insulin

    Text Solution

    |

  2. Select the mismatched pair

    Text Solution

    |

  3. The shape of guard cells changes due to change in the

    Text Solution

    |

  4. The growth of tendril in pea plants is due to

    Text Solution

    |

  5. The growth of pollen tubes towards ovules is due to

    Text Solution

    |

  6. The movement of sunflower in accordance with the path of the sun is du...

    Text Solution

    |

  7. The substance that triggers the fall of mature leaves and fruits from ...

    Text Solution

    |

  8. Which of the following statements about transmission of nerve impulse ...

    Text Solution

    |

  9. The involuntary actions in the body are controlled by:

    Text Solution

    |

  10. Which of the following is not an involuntary action?

    Text Solution

    |

  11. When a person is suffering from severe cold, he or she cannot

    Text Solution

    |

  12. Which is the correct direction of flow of electrical impulses?

    Text Solution

    |

  13. Which statement is not true about thyroxin?

    Text Solution

    |

  14. Dwarfism results due to

    Text Solution

    |

  15. Dramatic changes of body features associated with puberty are mainly b...

    Text Solution

    |

  16. A doctor advised a person to take an injection of insulin because

    Text Solution

    |

  17. The hormone which increase the fertility in males is called

    Text Solution

    |

  18. Which of the following endocrine glands is unpaired?

    Text Solution

    |

  19. The junction between two neurons is called

    Text Solution

    |

  20. In humans, the life processes are controlled and regulated by

    Text Solution

    |