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6. Who has a labrum?

  • Regular Echinoid
  • Irregular Echinoid
  • Both

7. Who has tubercles?

  • Both
  • Regular Echinoids
  • Irregular Echinoids

8. Who shows Bilateral Symmetry?

  • Regular Echinoid
  • Irregular Echinoid
  • Both

9. Who particle feeds?

  • Both
  • Irregular Echinoid
  • Regular Echinoid

10. Who lives in high energy conditions?

  • Regular Echinoid
  • Both
  • Irregular Echinoid

11. Who has fascioles to direct water to the mouth and to direct waste away from the echinoid?

  • Irregular Echinoid
  • Regular Echinoid
  • Both

12. Who has 5-fold radial symmetry?

  • Regular Echinoid
  • Both
  • Irregular Echinoid

13. Who uses the tube feet for, respiration, attachment and movement?

  • Regular Echinoid
  • Irregular Echinoid
  • Both

14. Who has an 'Aristotle's lantern'?

  • Regular Echinoid
  • Irregular Echinoid
  • Both