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Which group of chordates posses sucking ...

Which group of chordates posses sucking and circular mouth without jaws ?

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**Step-by-Step Solution:** 1. **Identify the Characteristics**: The question asks for a group of chordates that have a sucking and circular mouth without jaws. 2. **Recall the Classes of Chordates**: Chordates are divided into various classes, including mammals, birds, reptiles, amphibians, and fishes. Among fishes, there are jawed and jawless varieties. 3. **Focus on Jawless Fishes**: Since the question specifies "without jaws," we need to focus on jawless fishes. ...
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