2,4-D, Dicamba, and Glyphosate are classified as which type of growth regulator?

2,4-D, Dicamba, and Glyphosate are classified as which type of growth regulator?

• A. Anti-gibberlation
• B. Auxin type
• C. Cytokinin-type
• D. Ethylene-type

Answer: (B)

Auxin-type growth regulators are synthetic compounds that mimic the natural plant hormone auxin, directing growth processes in the plant. 2,4-D and Dicamba are classic examples of this kind of herbicide: they imitate auxin signals and trigger an overgrowth response in susceptible broadleaf weeds, leading to distorted growth, tissue damage, and eventually the plant’s death. Glyphosate, on the other hand, doesn’t act by hormone signaling. It inhibits the EPSP synthase enzyme in the shikimate pathway, blocking synthesis of essential amino acids, which is a metabolic method rather than an auxin-like growth-regulating effect. So the type that fits 2,4-D and Dicamba is Auxin-type growth regulator.

Auxin-type growth regulators are synthetic compounds that mimic the natural plant hormone auxin, directing growth processes in the plant. 2,4-D and Dicamba are classic examples of this kind of herbicide: they imitate auxin signals and trigger an overgrowth response in susceptible broadleaf weeds, leading to distorted growth, tissue damage, and eventually the plant’s death.

Glyphosate, on the other hand, doesn’t act by hormone signaling. It inhibits the EPSP synthase enzyme in the shikimate pathway, blocking synthesis of essential amino acids, which is a metabolic method rather than an auxin-like growth-regulating effect.

So the type that fits 2,4-D and Dicamba is Auxin-type growth regulator.