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Question

Which hormone is used for the elongation of the genetically dwarf plants?

A
Cytokinin
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B
IAA
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C
Gibberellin
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D
Abscisic Acid
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Solution

The correct option is C Gibberellin
Genetically dwarf plants are those plants which are significantly smaller in size as compared to other plants of the same species. Gibberellins promotes bolting (internode elongation just prior to flowering) and this helps the elongation of the genetically dwarf plant.
S.No. Plant growth regulator Function
1 Gibberellin Overcomes dwarfism in genetically dwarf plants.
2 Cytokinin Helps in cytokinesis that is the division of the cytoplasm of a parent cell into 2 daughter cells.
3 IAA (Indole acetic acid) Initiate root formation in stem cuttings.
4 Abscisic acid Inhibits the development and maturation of seed.

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