AMU Medical AMU Solved Paper-1999

  • question_answer
    A situation where one population is  benefitted while the other unaffected is referred as

    A)  commensalism    

    B)  parasitism

    C)  amensalism      

    D)  symphily.

    Correct Answer: A

    Solution :

    : Commensualism is an association between two or more organisms of distinct species in which one, the commensal, derives benefit from the other, the host. The host organism neither suffers nor benefits. Parasitism is a state of relationship between two organisms in which one, the parasite, derives benefit from the other, the host. The latter organism frequently, but not invariably, suffers as a result of the relationship. Amensalism is an interaction between two species where one impedes or restricts the success of the other while not being affected positively or negatively by the presence of the other. Symphily is a harmonious relationship between an organisms and the colony of ants or termites in which it lives.


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