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Question

Which one of the following pairs is not correctly matched?


A

IAA -Cell wall elongation

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B

Abscisic acid -Stomatal closure

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C

Gibberellic acid -Leaf fall

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D

Cytokinin -Cell division

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Solution

The correct option is C

Gibberellic acid -Leaf fall


Gibberellic acid is a plant hormone that promotes cell elongation of both leaves and stems in general and internodal length of genetically dwarf plants in particular. It is, in general, a growth promoting hormone and does not inhibit growth. So, leaf abscission is not associated with gibberellic acid but with abscisic acid.


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