BHU PMT BHU PMT (Screening) Solved Paper-2006

  • question_answer
    Law of limiting factor was given by:

    A)  Leibig                                  

    B)  Blackman

    C)  Calvin                                  

    D)  Amon

    Correct Answer: B

    Solution :

                     Liebig (1843), proposed the law of minimum which states that "when a process, such as growth, is governed by a number of separate factors, the rate of the process is limited by pace of slowest factor." Blackmail' (1905) extended the law of minimum to formulate the law of limiting factors which in his own words is "when a process is conditioned as to its rapidity by a number of separate factors, the rate of the process is limited by the pace of slowest factor." Blackman proposed the dark reaction of carbon assimilation, known as Calvin cycle or Blackaman reaction. Calvin (1954) (Nobel Prize Winner) traced the path of carbon in photosynthsis. Arnon (1954) and others used radioactive\[C{{O}_{2}}\]  to show  carbon assimilation  in chloroplasis. Arnon (1960) demonstrated cyclic and non-cyclic photophosphorylarion.        


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