The formation of the abscission zone can be i | vedclass

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(D) Abscisic acid $(ABA)$ is a plant growth inhibitor that plays a crucial role in the process of abscission. It promotes the formation of the absciss

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Abscisic acid

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(D) Abscisic acid $(ABA)$ is a plant growth inhibitor that plays a crucial role in the process of abscission. It promotes the formation of the abscission zone in leaves,flowers,and fruits,which leads to their shedding from the plant body. While auxins generally inhibit abscission,$ABA$ acts as a promoter of this process,especially under stress conditions or during senescence.

The formation of the abscission zone can be induced by which of the following?

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Which hormone induces senescence?

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$I.$ Antagonist to $GA$
$II.$ Promotes bud dormancy
$III.$ Promotes stomatal closure
$IV.$ Promotes abscission layer
Identify the hormone/s which promote/s all these events in plants and choose the correct option.

Abscisic acid $(ABA)$ regulates which of the following?

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