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6. What organism shows bilateral symmetry?

  • Both
  • Brachiopods
  • Bivalves

7. In which organism does the umbo lie in part of the shell top portion of both valves?

  • Brachiopods
  • Bivalves
  • Both

8. Which organism has a muscular foot?

  • Bivalves
  • Brachiopods
  • Both

9. Which organism is inequivalve?

  • Brachiopod
  • Bivalve
  • Both

10. Which organisms shell is made of calcium carbonate?

  • Brachiopods
  • Both
  • Bivalves

11. Which organism shows bilateral symmetry along the dorsal view?

  • Both
  • Bivalves
  • Brachiopods

12. Which organism can use a byssus to attach itself to hard substrate?

  • Both
  • Bivalves
  • Brachiopods

13. Which organism has both diductor muscles and adductor muscles to open the shell?

  • Brachiopods
  • Bivalves
  • Both

14. Which organism contains a lophophore?

  • Both
  • Brachiopods
  • Bivalves

15. Which organism is extant?

  • Bivalves
  • Both
  • Brachiopods

16. Which organism uses gills for respiration?

  • Bivalve
  • Brachiopod
  • Both

17. What organism has a lophophore?

  • Both
  • Brachiopods
  • Bivalves

18. Which organism is equivalve?

  • Both
  • Bivalves
  • Brachiopods

19. Which organism has a pedicle for attachment to the substrate?

  • Brachiopods
  • Bivalves
  • Both

20. Which organism belongs to the phylum mollusca?

  • Both
  • Bivalves
  • Brachiopods