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Question

In green plants, cell elongation in the internodal region can be promoted by the application of

A
Ethylene
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B
Cytokinins
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C
Gibberellins
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D
Indole acetic acid
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Solution

The correct option is C Gibberellins
Gibberellin or gibberellic acid is a plant hormone that was isolated from fungus Gibberella fujikuroi. It promotes internodal cell elongation in the wide range of species. This internodal elongation phenomenon is known as blotting. It has also a role in germination, flowering, and fruit ripening. Thus, the correct answer is option C.

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