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Manipal Medical Manipal Medical Solved Paper-2010

  • question_answer
    Which are of the following has epiphytic features   and   aerial   and   flattened photosynthetic   roots,   without   formal organisation of stem and leaves?

    A)  Tinospora       

    B)  Trapa

    C)  Taeniophyllum   

    D)  Vanda

    Correct Answer: D

    Solution :

     Taeniophyllum is an epiphytic orchid with thick flattened photosynthetic roots. These roots are green aerial, adventitious which prepare food materials by photosynthesis. The stem and leaves are absent. In Vanda and Dendrobium, hygroscopic roots (epiphytic root) hang freely in the air and absorb moisture with the help of special sponge-like tissue called velamen. Tinospora   and   Trapa   also   contain photosynthetic or assimilatory roots but stem and leaves are present.


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