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2. What do terrestrial vertebrates use the post-anal tail for?

  • Courting
  • All of the above
  • Balance
  • Signalling danger

3. The sub-phylum Vertebrata have

  • A notochord and backbone made of cartilage or bone
  • A backbone made of cartilage or bone and an encased brain
  • A notochord and encased brain

4. In vertebrate fishes pharyngeal slits develop into

  • Gill arches
  • Jaws
  • Cartilage

5. In aquatic environments pharyngeal slits allow for what?

  • The exit of water that enter the mouth during feeding
  • The entrance of water into the mouth during feeding
  • The entry of water to pass over the gills for respiration
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