Which one of the following acids is a derivative of carotenoids?

Which one of the following acids is a derivative of carotenoids?
  1. Indole-butyric acid
  2. Indole-3-acetic acid
  3. Gibberellic acid
  4. Abscisic acid

Solution

Abscisic acid is a terpenoid, $i e$, a derivative of steroid. Indole butyric acid and indole-3-acetic acid are auxins, which are weak organic acids. Gibberellic acid (gibberellin) is a terpene.

Asked in: NEET 2009 (Screening)

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