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6. Most adult Tunicates are

  • Benthic
  • Sessile
  • Pelagic

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

9. The notochord is ...

  • Flexible
  • Inflexible

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...

  • Tunicates
  • Lancelets

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?

  • 1
  • 3
  • 2
  • 4

18. The notochord provides skeletal support through the length of the body

  • True
  • False

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