Multiple choice

Which among the following is a phytohormone?

  1. Indoline

  2. Indole-3-acetic acid

  3. Inositol

  4. Iodoform
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B Correct answer
Explanation

Indole-3-acetic acid is a heterocyclic compound that is a phytohormone called auxin. This colourless solid is native plant compound, potent and the most important auxin. The molecule is derived from indole and containing a carboxymethyl group (acetic acid).

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