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NEET AIPMT SOLVED PAPER 1998

  • question_answer
                The response of different organisms to the environmental rhythms of light and darkness is called:

    A)              phototaxis

    B)              phototropism      

    C)              vernalization     

    D)              photoperiodism

    Correct Answer: D

    Solution :

                Photoperiodism is the term to denote a biological response to changes in the ratio of light and darkness in a 24 hour cycle.


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