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    Question

    Organs have associated to form functional systems, each

    system concerned with a specific physiological function. Which of the following organism shows these type of body organisation.
    A Porifera Correct Answer Incorrect Answer
    B Platyhelminthes Correct Answer Incorrect Answer
    C Annelids Correct Answer Incorrect Answer
    D Both a and b Correct Answer Incorrect Answer

    Solution

    Organ system level of organization: organs have associated to form functional systems, each system concerned with a specific physiological function. Eg: Annelids, Arthropods, Molluscs etc. 

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