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BotanyNEET 2024Plant growth regulators: auxin, gibberellin, cytokinin, ethylene, ABA

Plant Growth and Development

Spraying a sugarcane crop with which of the following plant growth regulators increases the length of the stem, thus increasing the yield?

  1. A.Gibberellin
  2. B.Cytokinin
  3. C.Abscisic acid
  4. D.Auxin

Solution

Gibberellin sprayed on sugarcane increases internode length, so the stem — where sugar is stored — grows longer and yield rises.

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