- Aspirin delays senescence in cut parts of plant and keeps flower fresh for longer time The effect of aspirin
(1) by decreasing the synthesis of ethylene.
(2) by increasing the synthesis of absicicic acid
(3) by increasing the synthesis of cytokinins
(4) by increasing the synthesis of gibberlic acid
Correct answer: (1) by decreasing the synthesis of ethylene.
Explanation:
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Aspirin delays senescence and keeps flowers fresh mainly by inhibiting or decreasing the synthesis of ethylene, a plant hormone that promotes senescence and aging processes.
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By reducing ethylene production, aspirin slows down leaf yellowing, flower wilting, and tissue deterioration.
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It does not increase abscisic acid, cytokinin, or gibberellic acid synthesis directly for this effect.
Option explanations:
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(1) Decreasing ethylene synthesis — correct; ethylene is the primary hormone driving plant tissue senescence.
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(2) Increasing abscisic acid — ABA generally promotes stress responses and senescence rather than delaying it.
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(3) Increasing cytokinins — cytokinins delay senescence but aspirin does not work mainly by increasing cytokinin synthesis.
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(4) Increasing gibberellins — gibberellins promote growth but are not key for senescence delay.
2 Comments
Manisha choudhary
November 29, 2025By decreasing the synthesis of ethylene
Ethylene senecene ko promote krta h
Cytokinin senescence ko delay krta h but ck increase krne p aspirin increase nhi hota means work nhi krta
Sakshi Kanwar
December 1, 2025by decreasing the synthesis of ethylene