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Question

One of these is herbicide / weedicide

A
IAA
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B
NAA
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C
GA3
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D
2, 4-D
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Solution

The correct option is D 2, 4-D
A 2,4-D stands for 2,4-Dichlorophenoxyacetic acid. It is a plant growth regulator. It also acts as herbicide. It kills the broadleaf weeds that harm the plants by causing uncontrolled growth in them.
Thus, the correct answer is option D.

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