Uttarakhand PMT Uttarakhand PMT Solved Paper-2008

  • question_answer
    Which of the following induces flowering in long day plants ?

    A)  Gibberellins    

    B)  Cytokinin

    C)  Auxins         

    D)  Ethylene

    Correct Answer: A

    Solution :

    Gibberellins are plant hormones which are first isolated from a fungus Gibberella fujikuroi. They induces flowering in long-day planats short day conditions. Auxins are plant hormones which are responsible for phototropic and geotrophic movements eg, IAA. Cytokinins are amino-purine derivates. promotes cell division in plants. Ethylene is a gaseous plant hormone which responsible for fruit ripening.


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