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JIPMER 2018
Exam
JIPMER
Year
2018
Subject
Botany
Chapter
Plant - Growth and Development

JIPMER 2018 · Botany · Plant - Growth and Development

Which of the following is not a plant growth inhibitor?

Which of the following is not a plant growth inhibitor?

Options

  1. ADormin
  2. BIAA
  3. CEthylene
  4. DABA

Correct answer

B. IAA

Step-by-step solution

IAA is a plant growth promoter while dormin, abscisic acid and ethylene are plant growth inhibitors. IAA (indole 3-Acetic Acid) is an auxin. It was discovered by Koge et al. (1934). Auxins are synthesised in shoot apices, leaf primordia and developing seeds from amino acid, tryptophan.
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