1. Sea squirts, Thaliaceans and Larvaceans are major groups of...
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2. How many key traits do Chordates have?
3. In vertebrate fishes pharyngeal slits develop into
- Gill arches
4. Posterior elongation of the body, extending beyond the anus is known as?
- The ridge
- The post-anal tail
- The spine
- The tail end
5. Most adult Tunicates are