Home
Class 11
BIOLOGY
Fill in the blanks A. Maximum growth i...

Fill in the blanks
A. Maximum growth is observed in ………..phase.
B. Apical dominace is due to ………………
C. ……………..inititate rooting
D. Pigment involved in photoperception in lfowering plants in ……………

Text Solution

Verified by Experts

A. Exponential
B. Auxin
C. Cytokinin
D. Phytochrome
Promotional Banner

Topper's Solved these Questions

  • PLANT GROWTH AND DEVELOPMENT

    NCERT EXEMPLAR|Exercise Long Answer Type Question|3 Videos
  • PLANT GROWTH AND DEVELOPMENT

    NCERT EXEMPLAR|Exercise Very Short Answer Type Question|13 Videos
  • PHOTOSYNTHESIS IN HIGHER PLANTS

    NCERT EXEMPLAR|Exercise Long Answer type Question|13 Videos
  • PLANT KINGDOM

    NCERT EXEMPLAR|Exercise LONG ANSWER TYPE QUSTIONS|5 Videos

Similar Questions

Explore conceptually related problems

Fill in the blanks : A. The development of …… from the zygote is called ………. B. Embryonal protection and care are better in ……. animals . C. …… animals lay eggs. D. In followering plants, after …….. ovary develops into fruit and ……. mature into seeds.

Fill inthe blanks, sin A=.... x cos A (A) sin A (B) tan A (C) cot A (D) cos A

Fill in the blanks : (A) ....is a simple gaseous hormone. (B) ....is shedding of leaves, fruits or flowers by a plant (C) Plant growth is generally confined to ....regions and in.......tissues. (D) Cytokinins are synthesized in areas where .... is occurings. (E) Auxins are generally produced by the growing apices of ....and ......

Fill in the places with appropriate word/ words. (a)A phase of growth which is maximum and fastest is ………. (b)Apical domince as expressed in dictyledonous plants is due to the presence of more……. In the apical buyd than in the lateral ones (c )In additon to lauxin a……. Must be supplied to culture medium to obtain a good callus in plant tissue culture (d)…………of a vegetative plants are the sites of photperiodic perception.

(i) _____ 'A'____ ​helping the plants to increase their absorption surface by promoting root hairs formation. (ii)​ ___'B'_____ ​ initiates germination in peanut seeds. Choose the correct plant growth regulator (s) from the following to fill the blanks A and B respectively :

Fill in the blanks: (A) Ethylene is synthesized in tissue undergoing ....and..... fruits. (B) Abscisic acid acts as a general....of growth and metabolism. (C) ......is a period between complete materity and final death of an organ or organism. (D) ....were first plant hormones to be discovered. (E) ....means the testing of chemical substance for its activity in causing a growth response in a living plant or its part.

NCERT EXEMPLAR-PLANT GROWTH AND DEVELOPMENT -Short Answer Type Question
  1. Nicotiana tobacum, a short day plant , when exposed toi more than crit...

    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

    |