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Question

Synthetic hormone used as a weedicide is

A
2,4-D
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B
IBA
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C
NAA
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D
PAA
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Solution

The correct option is A 2,4-D
Auxins at supra-optimal concentrations, serve as effective herbicides. 2,4-D is widely used to kill dicotyledonous weeds, but does not affect monocotyledonous plants.

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