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  3. Punjab Medical

Punjab Medical Punjab - MET Solved Paper-2006

  • question_answer
    Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of:

    A)  cutin                                    

    B)  suberin

    C)  sporopollenin                  

    D)  callose

    Correct Answer: C

    Solution :

    Exine of pollen grains is made up of a highly resistant fatty substance called sporopollenin.


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