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NEET2026BiologyChapterActual

Based on chemical composition, which of the following plant growth regulators is classified as a terpene?

Options

  1. AIndole-3-acetic acid
  2. BGibberellic acid
  3. CKinetin
  4. DAbscisic acid

Correct answer

B. Gibberellic acid

Step-by-step solution

Plant growth regulators (PGRs) are classified into different categories based on their chemical composition: Indole compounds: Indole-3-acetic acid (IAA) Adenine derivatives: Kinetin (N6-furfurylamino purine) Derivatives of carotenoids: Abscisic acid (ABA) Terpenes: Gibberellic acid (GA3) Gases: Ethylene (C2H4) Therefore, Gibberellic acid is classified as a terpene. Answer: Gibberellic acid

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