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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development5 Marks
Question
Which one of the plant growth regulators would you use if you are asked to:
  1. induce rooting in a twig
  2. quickly ripen a fruit
  3. delay leaf senescence
  4. induce growth in axillary buds
  5. ‘bolt’ a rosette plant
  6. induce immediate stomatal closure in leaves.
✓

Answer

  1. Induce rooting in a twig – Auxins
  2. Quickly ripen a fruit – Ethylene
  3. Delay leaf senescence – Cytokinins
  4. Induce growth in axillary buds – Cytokinins
  5. ‘Bolt’ a rosette plant – Gibberellic acid
  6. Induce immediate stomatal closure in leaves – Abscisic acid

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