UPSC General Studies Solved Paper - General Studies-2014

  • question_answer
    Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of

    A)  algae and bacteria

    B)         algae and fungi

    C)  bacteria and fungi

    D)         fungi and mosses

    Correct Answer: B

    Solution :

    Exp. [b] A lichen is a composite organism consisting of a fungus and a photosynthetic partner growing in a symbiotic relationship. The photosynthetic partner is usually either a green algae or a cyanobacterium. The morphology, physiology and biochemistry of lichens are very different from those of the isolated fungus and algae.

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