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Sponges have a water transport or canal system, in which the path of water is
(a)Osculum - Ostia - Spongocoel
(b)Ostia - Osculum - Spongocoel
(c)Osculum - Ostia - Spongin fibre - Spongocoel
(d)Ostia - Spongocoel - Osculum

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Important Questions on Animal Kingdom
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Formation of canal system in sponges is due to

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Some features are given below that evolved for the first time in cnidarians. Mark the wrong one.

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Which of the following is not a characteristic feature of Hydra?

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Metagenesis in Obelia is different from the alternation of generations in plants because

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The cnidoblasts or stinging cells of coelenterates are concerned with

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Which of the following is incorrect regarding Hydra?

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Which of the following is an incorrect statement regarding Cnidarians?

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A colonial hydrozoan is
