Multiple choice

Which of the following is a pair of synthetic auxins used as herbicides?

  1. IAA and IBA

  2. IAA and NAA

  3. 2,4-D and 2,4,5-T

  4. IBA and 2,4-D

  5. IBA and NAA
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

2,4-Dichlorophenoxyacetic acid (2,4-D) is a common systemic pesticide/herbicide used in the control of broadleaf weeds. It is one of the most widely used herbicides in the world and is the third most commonly used herbicide in North America. 2,4-D is a synthetic auxin (plant hormone). 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T), a synthetic auxin, is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants.

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