Photoperiodism was first studied by

  • A
    Garner and Allard
  • B
    Darwin
  • C
    $FW$ Went
  • D
    Cousins

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Some plants like sugarbeet and cabbage require low temperature for flowering. This phenomenon is called:

Which of the following is a long day plant?

Flowering of plants by exposure to low temperature is called

Which chemical is associated with flowering?

Nicotiana tabacum,a short-day plant,when exposed to more than the critical period of light,fails to flower. Explain.

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