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Plant Growth and Development question

2008 · Q7
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Plant Growth and Development question

2008 · Q7

NEETBiologyPlant Growth and DevelopmentMCQ+4 / −1
Importance of day length in flowering of plants was first shown in
  1. A
    cotton
  2. B
    Petunia
  3. C
    Lemna
  4. D
    tobacco.
View written solutionFree

Correct answer: D

Photoperiodism was first studied by Garner and Allard (1920). They observed that “Maryland Mammoth” variety of tobacco could be made to flower in summer by reducing the light hours with artificial darkening. It could be made to remain vegetative in winter by providing extra light.

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