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    Question

    Which of the following is an example of Growth regulator

    herbicide?  
    A Terbacil Correct Answer Incorrect Answer
    B 2, 4-D Correct Answer Incorrect Answer
    C MCPA Correct Answer Incorrect Answer
    D Both b & c Correct Answer Incorrect Answer
    E All a, b & c Correct Answer Incorrect Answer

    Solution

    The growth regulators include the following herbicide families’ viz. phenoxy acetic acids, benzoic acids and the pyridines. Growth regulator herbicides can act at multiple sites in a plant to disrupt hormone balance and protein synthesis and there by cause a variety of plant growth abnormalities. Examples: Phenoxy Acetic Acids, 2,4-D , MCPA, 2,4-DB    Terbacil is Photosynthesis inhibitor herbicide . 

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