Home
Class 11
BIOLOGY
The role of ethylene and abscissic acid ...

The role of ethylene and abscissic acid is both positive and negative justify the statement

Text Solution

Verified by Experts

Both the hormones have negative and positive effects. They promote and inhibit certain processes. Ethylene promotes ripening of fruits. It promotes transverse growth but inhibits longitudinal growth. ABA promotes hardiness to cold and infections but inbibits growth of auxins. It brings out closure of stomata.
Promotional Banner

Topper's Solved these Questions

  • PLANT GROWTH AND DEVELOPMENT

    MODERN PUBLICATION|Exercise NCERT FILE (NCERT EXEMPLAR PROBLEM (D.LONG ANSWER TYPE QUESTIONS ))|3 Videos

  • PLANT GROWTH AND DEVELOPMENT

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & BRAIN TWISTING (Very Short Answer Questions )|7 Videos

  • PLANT GROWTH AND DEVELOPMENT

    MODERN PUBLICATION|Exercise NCERT FILE (NCERT EXEMPLAR PROBLEM (B. VERY SHORT ANSWER TYPE QUESTIONS ))|13 Videos

  • PHOTOSYNTHESIS IN HIGHER PLANTS

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|9 Videos

  • PLANT KINGDOM

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

Similar Questions

Explore conceptually related problems

One of the following has both positive and negative oxidation states

What is the effect of ethylene on abscission?

Which one of the following elements shows both positive and negative oxidation states?

A form of amino acid with both positive and negative charges simultaneously in the same molecule is

Which one of the following elements can have both positive and negative oxidation state?

An amino acid under certain conditions have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is called

MODERN PUBLICATION-PLANT GROWTH AND DEVELOPMENT-NCERT FILE (NCERT EXEMPLAR PROBLEM (C.SHORT ANSWER TYPE QUESTIONS ))
  1. Nicotiana tabacum, a short plant, when exposed to more than the critic...

    Text Solution

    |

  2. What are the structural characteristics of (a) meristematic cells ne...

    Text Solution

    |

  3. Does the growth pattern in plants differ from that in animals? Do all ...

    Text Solution

    |

  4. Explain in 2-3 lines each of the following terms with the help of exam...

    Text Solution

    |

  5. Auxins are growth hormones caplable of promoting cell elongation. They...

    Text Solution

    |

  6. The role of ethylene and abscissic acid is both positive and negative ...

    Text Solution

    |

  7. While experimentation , why do you think it is difficultto assign any...

    Text Solution

    |

  8. What is the mechanism underlying the phenominon by which the terminal/...

    Text Solution

    |

  9. In animals , there are glands secreting hormones , formed ? How are th...

    Text Solution

    |

  10. Many discoveries in science have been accidental .This is true for pla...

    Text Solution

    |

  11. To get a carpet like garas lawns are mowed regularly.Is there any sci...

    Text Solution

    |

  12. In a slide showing different types of cells can you identify which typ...

    Text Solution

    |

  13. A rubber band stretches and reverts back to its original position. Bub...

    Text Solution

    |

  14. Label the diagram A.This is which part of a dicotyledonous plants? ...

    Text Solution

    |

  15. Both animals and plants grow. Why do we say that growth and diffeentit...

    Text Solution

    |

  16. Define parthenocarpy . Name the plant hormone used to induce parthenoc...

    Text Solution

    |

  17. While eating watermelons, all of us wish it was seedless,. As a plkant...

    Text Solution

    |

  18. A gardener finds some broad leaved dicotweeds growing in his lawns wha...

    Text Solution

    |

  19. On germination a speed first produces shoots with leaves , flowers app...

    Text Solution

    |

  20. Fill in the blanks A. Maximum growth is observed in ………..phase. B....

    Text Solution

    |