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

  • question_answer
    What is the action spectrum of photoperiodism [BHU 1982]

    A) 430 and 660 nm

    B) 640 and 660 nm

    C) 660 and 730 nm

    D) 700 and 900 nm

    Correct Answer: C

    Solution :

      Because two types of phytochrome is present in plants i.e., P660 and P730.


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