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In poriferans division of labour is present between ______________ .

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Important Questions on Animal Kingdom

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Fertilisation is ________ and development is ________ in sponges.
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Which of the following is not the function of water transport system in sponges?
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The central body cavity of coelenterates is called
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How many germ layers are present in the embryonic stage of Platyhelminthes?
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In flatworms, fertilisation occurs in the :-
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The free swimming larva of coelenterates is
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The characteristic cells of coelenterates are