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JAMB Biology 2013 Question 35

Question 35

Plant Responses and Hormones

The most important plant hormone is

  1. A.abscisic acid.
  2. B.auxin.
  3. C.gibberellin.
  4. D.cytokinin.
Show the answer and explanation

Answer: B (auxin.)

Explanation

Auxins control many key processes such as cell elongation, tropisms, root formation and apical dominance, so they are regarded as the main plant hormone.