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Just like Rana, Salamandra has no tail

Just like Bangarus, Ichthyophis has three chambered heart

Just like Physalia, Pleurobrachia, has cnidocytes

Just like platypus, shark is oviparous

answer is B.

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Detailed Solution

Amphibians and reptiles have 3 chambered heart.

Salamandra has tail. Cnidoblasts are absent in Pleurobrachia.

Sharks are viviparous.

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