NEET Biology Plant Growth and Development / पौधे की वृद्धि और विकास Question Bank Photoperiodism and Vernalization

  • question_answer
    In short day plants (SDP) flowering is induced by [CBSE PMT 1992]

    A) Long night

    B) Photoperiod less than 12 hours

    C) Photoperiod shorter than initial value and uninterrupted long night

    D) Short photoperiod and interrupted long night

    Correct Answer: C

    Solution :

    In SDP the dark period is critical and must be continuous. If this dark period is interrupted even with a brief exposure of red light, the short day plant will not flower.


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