Which of the following is a mismatched pair?

Odd toed - Horse

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Pheretima - Parapodia

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Hydra - Cnidaria

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Cartilaginous Fish - Shark

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Solution

The correct option is B Pheretima - Parapodia
Pheretima (Earthworm) is an Annelid. They possess longitudinal and circular muscles which help in locomotion. The locomotion is aided by coelomic fluid and 'S' shaped chitinous setae. Aquatic annelids like Nereis possess lateral appendages or parapodia, which help in swimming. So, the correct answer is option B.

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