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  3. Chhattisgarh PMT

Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2007

  • question_answer
    Substances, which originate at the tip of stem, root and control the growth of different organs are

    A)  enzymes                            

    B)  hormones

    C)  vitamins                             

    D)  food substances

    Correct Answer: B

    Solution :

    Substances, which originate at the tip of stem and root and control the growth of different organs are hormones. T. he term 'hormone' used by first Starling (1906). The growth hormone are also called phytohormones, term given by Thimann (1948).


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