Multiple choice

Auxins are plant hormones. Which of the following is a synthetic auxin ?

  1. Dichlorofluoromethane

  2. 2,4-Dichlorophenoxyacetic acid

  3. 2,2-Dichloro-1,1,1-trifluoroethane

  4. Dichlorvos
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

2,4-Dichlorophenoxyacetic acid (2,4-D) is a common systemic pesticide / herbicide used in the control of broadleaf weeds. 2,4-D is a synthetic auxin (plant hormone), and as such it is often used in laboratories for plant research and as a supplement in plant cell culture media such as MS medium.

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