1. (i) Cartilaginous endoskeleton, e.g, Torpedo, Sting ray, Dog fish. (ii) Bony endoskeleton, e.g Rohu, Angler fish, Exocoetus.

    (i) Cartilaginous endoskeleton, e.g, Torpedo, Sting ray, Dog fish.
    (ii) Bony endoskeleton, e.g Rohu, Angler fish, Exocoetus.

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  2. 1. Acoelomata. Spongilla, Sea anemone, Planaria, Liver fluke. 2. Psudocoelomata. Wuchereria, Ascaris. 3, Coelomata. Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.

    1. Acoelomata. Spongilla, Sea anemone, Planaria, Liver fluke.
    2. Psudocoelomata. Wuchereria, Ascaris.
    3, Coelomata. Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.

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