Experts can i have the answer for this question 

Q. Which of the plant growth regulators one would use for the following>
a) 'bolt' a rosette plant' 
b) induce immediate stomatal closure of leaves
c) quickly ripen a fruit
c) induce rooting in a twig
c) delay in the leaf senescence
c) induce parthenocarpy in tomatoes 


Dear Student,
Please find below the solution to the asked query:
1) 'Bolt' a rosette plant - ​Gibberellic acid.
2) ​Induce immediate stomatal closure in leaves – Abscisic acid.
3) ​Quickly ripen a fruit – Ethylene.
4) ​Induce rooting in a twig – Auxins.
5) ​Delay leaf senescence – Cytokinins
6) Induce parthenocarpy in tomatoes - Cytokinins.
Hope this information will clear your doubts about the topic.
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