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Plant Growth and Development question

2014 · Q7
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Plant Growth and Development question

2014 · Q7

NEETBiologyPlant Growth and DevelopmentMCQ+4 / −1
Which one of the following growth regulators is known as 'stress hormone'?
  1. A
    Abscisic acid
  2. B
    Ethylene
  3. C
    GA3
  4. D
    Indole acetic acid
View written solutionFree

Correct answer: A

Abscisic Acid (ABA) is called stress hormone which works in adverse environmental condition when there is low water content in atmosphere or in drought conditions. ABA causes the stomatal closure of leaves due to which the water loss by the plant is minimized.

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