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Which of the chordate characteristics do tunicates retain as adults?

7. Relating Concepts In tunicates, the anus empties into the excurrent siphon. What is the advantage of this anatomical arrangement?

figure 38-12

Most adult tunicates, such as Polycarpa aurata (a), are sessile filter feeders. A drawing of a tunicate's internal structure (b) shows its enlarged pharynx with slits, the only chordate characteristic retained by adult tunicates.

figure 38-12

Most adult tunicates, such as Polycarpa aurata (a), are sessile filter feeders. A drawing of a tunicate's internal structure (b) shows its enlarged pharynx with slits, the only chordate characteristic retained by adult tunicates.

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