Lettuce hypocotyl elongation test is performed for bioassay of?

Gibberellin

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Ethylene

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Cytokinin

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ABA

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Solution

The correct option is A Gibberellin
Answer :
i) Relationship between calcium ions and gibberellic acid (GA3)-induced growth in the excised hypocotyl of lettuce.
ii) Gibberellin controls extension growth in lettuce hypocotyl sections by regulating the uptake of Ca(2+) by the hypocotyl cells.
So correct answer is option A.Gibberellin.

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