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Chordates have single or paired gill sl...

Chordates have single or paired gill slits

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### Step-by-Step Solution: 1. **Understanding Chordates**: - Chordates belong to the phylum Chordata, which is characterized by certain key features. These include the presence of a notochord, a dorsal hollow nerve cord, and pharyngeal gill slits. 2. **Identifying Gill Slits**: - In chordates, the gill slits are openings that are found in the pharyngeal region. They are crucial for respiration in aquatic species and are involved in filter feeding in some organisms. ...
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