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9th Class Science Diversity in Living Organisms Question Bank Diversity in Living Organisms

  • question_answer
    A list of animals (i-viii) is given. Classify them as acoelomates, coelomates and pseudocoelomates and select the correct option.
    (i) Adamsia (ii) Wuchereria
    (iii) Nereis (iv) Earthworm
    (v) Planaria (vi) Ascaris
    (vii) Liver fluke (viii) Scorpion
     

    A)
    Acoelomates Coelomates Pseudocoelomates
    (i), (v), (vii) (iii), (iv), (viii) (ii), (vi)

    B)
    Acoelomates Coelomates Pseudocoelomates
    (i), (iv) (ii), (viii) (iii), (v), (vi), (vii)
                   

    C)
    Acoelomates Coelomates Pseudocoelomates
    (vi), (vii), (viii) (i), (ii), (iii) (iv), (v)
                   

    D)
    Acoelomates Coelomates Pseudocoelomates
    (iv), (v), (vi) (i), (iii) (ii), (vii), (viii)
     

    Correct Answer: A

    Solution :

    Acoelomates are those animals which do not have coelom (body cavity), e.g., coelenterates {Adamsia} and flatworms (Planaria and liver fluke). Coelcinates are the organisms with true coelom, e.g., annelids (Nereis and earthworm) and arthropods (scorpion). Pseudocoelomates have false coelom, e.g., nematodes (Wuchereria and Ascaris).


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