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Discussion :: Biology

  1. Most fish do not sink in water because of the presence of

    1. swim bladder
    2. air bladder
    3. air sacs
    4. air in spongy bones

    2. A.
    I and II are correct
    B.
    II and III are correct
    C.
    III and IV are correct
    D.
    I, II, III and IV are correct

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    Answer : Option A

    Explanation :

    No answer description available for this question.

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