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Questions and Answers
What is a characteristic that separates chordates from all other animals?
What is a characteristic that separates chordates from all other animals?
- Blastopore, which becomes the anus
- Post-anal tail (correct)
- Bilateral symmetry
- True coelom
Which extant chordates are postulated to be most like the earliest chordates in appearance?
Which extant chordates are postulated to be most like the earliest chordates in appearance?
- Lancelets (correct)
- Amphibians
- Reptiles
- Adult tunicates
What did chordate pharyngeal slits appear to have functioned first as?
What did chordate pharyngeal slits appear to have functioned first as?
- Components of the jaw
- The digestive system's opening
- Gill slits for respiration
- Suspension-feeding devices (correct)
A new species of aquatic chordate closely resembles an ancient form. In addition to the given characteristics, it will probably have which of the following characteristics?
A new species of aquatic chordate closely resembles an ancient form. In addition to the given characteristics, it will probably have which of the following characteristics?
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How do lampreys differ from hagfishes?
How do lampreys differ from hagfishes?
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