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  4. Locomotory organs of annelida are

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Q. Locomotory organs of annelida are

Odisha JEEOdisha JEE 2011Animal Kingdom

Solution:

Setae and parapodia are locomotory structures in annelids. Except leeches, unjointed chitinous setae are often present. Some annelids such as Nereis have unjointed, locomotory structures, the parapodia (para-parallel, podia - feet).
The leech bears two suckers. The anterior sucker encloses the mouth. It acts as a feeding, locomotory and prehensile organ. The posterior sucker lies at the hinder part of the body.