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6. Most adult Tunicates are
7. What do terrestrial vertebrates use the post-anal tail for?
- Courting
- Signalling danger
- All of the above
- Balance
8. Tunicates are what kind of feeders?
- Carnivore
- Filter
- Omnivore
- Herbivore
10. In most adult vertebrates the notochord is replaced by what?
- Vertebral column (spine)
- Rib cage
11. What shape is the notochord?
- Oblong
- Rod
- Triangular
- Circular
12. Organs can grow without being pressed by the body wall is an advantage of what?
- The notochord
- The pharyngeal slits
- The coelom
- The post-anal tail
13. In aquatic species the post-anal tail provides what?
- A source of locomotion
- Balance/Stabilisation
- Communicative signals
14. Sea squirts, Thaliaceans and Larvaceans are major groups of...
15. In vertebrates the dorsal hollow nerve cord is modified into what?
- The Central Nervous System
- The key organs
- Pelvis
16. Which of the following is not a key trait of Chordates?
- Post-anal tail
- Notochord
- Dorsal hollow nerve cord
- Muscle segments
- Pharyngeal slits
17. How many invertebrate sub-phyla of Chordata are there?
18. The notochord provides skeletal support through the length of the body
19. The dorsal hollow nerve cord derives from what?
- Spinal column
- Plasma
- Ectoderm
- Echinoderm
20. In aquatic environments pharyngeal slits allow for what?
- The entry of water to pass over the gills for respiration
- The exit of water that enter the mouth during feeding
- The entrance of water into the mouth during feeding