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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

    A)  Frequent irrigation of the crop

    B)  Treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer

    C)  Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5- trichlorophenoxy acetic acid

    D)  Application of iron and magnesium to promote synthesis of chlorophyll

    Correct Answer: D

    Solution :

     Because iron promotes the formation of chlorophyll and magnesium is an integral part of chlorophyll molecules, hence in the absence of these nutrients plant show chlorosis and leaves start yellowing.


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