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Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting.

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प्रश्न

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following terms related to auxins.

Auxin precursors

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उत्तर

The raw materials required for the initial synthesis of auxins are called auxin precursors.

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Plant Growth Regulators - Physiological Effects of Plant Growth Regulators
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अध्याय 15: Plant Growth and Development - Exercises [पृष्ठ ८८]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
अध्याय 15 Plant Growth and Development
Exercises | Q 5. a. | पृष्ठ ८८

संबंधित प्रश्न

Ethylene is used for ______.


Coconut water contains ______.


The affect of apical dominance can be overcome by which of the following hormone ______.


Match the following:

Column A Column B
A. IAA i. Herring sperm DNA
B. ABA ii. Bolting
C. Ethylene iii. Stomatal closure
D. GA iv. Weed-free lawns
E. Cytokinins v. Ripening of fruits

The term synergistic action of hormones refers to ______.


To increase sugar production in sugarcanes, they are sprayed with ______.


ABA acts antagonistic to ______.


Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to

Promote lateral shoot growth


Gibberellins promote the formation of ______ flowers on genetically _____ plants in Cannabis whereas ethylene promotes formation of _______ flowers on genetically ______ plants.


In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practice have any scientific explanation?


Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following terms related to auxins.

Synthetic auxins


What is the mechanism underlying the phenomenon by which the terminal/apical bud suppresses the growth of lateral buds? Suggest measures to overcome this phenomenon.


To get a carpet like grass lawns are mowed regularly. Is there any scientific explanation for this?


On germination a seed first produces shoot with leaves, flowers appear later, Why do you think this happens?


Name a hormone which induces femaleness in flowers of cucumber


Name a hormone which induces flowering in long day plants


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