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Question

Which of the following is not a naturally occurring plant hormone?

A
2, 4- D
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B
GA2
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C
Gibberellin
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D
IAA
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Solution

The correct option is A 2, 4- D
2, 4 - Dichlorophenoxyacetic acid is a common systemic herbicide used in the control of broadleaf weeds. It is one of the most widely used herbicides in the world. 2, 4 - D is a synthetic auxin and as such it is often used in laboratories for plant research and as supplement in plant cell culture media such as MS medium.

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