Home
Class 12
BIOLOGY
Dr. F. Went noted that is coleoptile tip...

Dr. F. Went noted that is coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. What significance is this experiment?

A

It demonstrated polar movement of auxins.

B

It made possible the isolation and exact identification of auxin.

C

It is the basis for quantitative determination of small amounts of growth-promoting substances

D

It supports the hypothesis that IAA is auxin

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ORGANISMS AND POPULASTIONS

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|168 Videos

  • PLANT KINGDOM

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTION|247 Videos
TRUEMAN BIOLOGY-PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS -MULTIPLE CHOICE QUESTIONS
  1. Bolting hormone is

    Text Solution

    |

  2. Auxanometer is used to measure

    Text Solution

    |

  3. Which one of the following generally acts as an antagonist to gibberel...

    Text Solution

    |

  4. Through their effect on plant growth regiulators, what do the temperat...

    Text Solution

    |

  5. Apical dominance is caused by

    Text Solution

    |

  6. The natural plant hormone isolated from cormn kernels and coconut milk...

    Text Solution

    |

  7. Low temperature treatment to speed up the process of flowering is refe...

    Text Solution

    |

  8. During seed germination, its stored food is mobilised by

    Text Solution

    |

  9. Which one of the following plant hormone (phytohormone) is know as a s...

    Text Solution

    |

  10. A few normal seedlings of tomato were kept in a dark room. After a few...

    Text Solution

    |

  11. Dr. F. Went noted that is coleoptile tips were removed and placed on a...

    Text Solution

    |

  12. Minerals known to be required in large amounts for plant growth includ...

    Text Solution

    |

  13. The rate of growth of any organism follows Or Typical growth curve...

    Text Solution

    |

  14. What causes a green plant exposed to the light on only one side, to be...

    Text Solution

    |

  15. Auxin can be bioassayed by

    Text Solution

    |

  16. The Avena curvature is used for bioassay of

    Text Solution

    |

  17. You are given a tissue with its potential for differentiation in an ar...

    Text Solution

    |

  18. Phytochrome is

    Text Solution

    |

  19. study the four statements (A-D) given below and select the two correct...

    Text Solution

    |

  20. Which of the following prevents falling of fruits OR Fruit and lea...

    Text Solution

    |