Phylum Mollusca: The Molluscs

30 Questions | Total Attempts: 243

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Phylum Quizzes & Trivia

Today we’ll be looking at a well-known, large phylum of invertebrate animals, called Mollusca – whose members are most often referred to as molluscs, of which around 85,000 extant species are recognised. What do you know about them?


Questions and Answers
  • 1. 
    What carried out many functions, but protection of the soft body is the primary function?
  • 2. 
    The molluscan body is divided into two regions -- the _________ and _________.
  • 3. 
    Which region contains the feeding, special sensory, and locomotion structures?
  • 4. 
    All but the_________ have a rasping, tongue-shaped organ called the radula, which is used for feeding.
  • 5. 
    Most molluscs go through metamorphosis, producing larval forms such as a ____________ and __________.
  • 6. 
    Molluscs are the _________ largest phylum of animals with approximately 50,000 extant species.
    • A. 

      1st

    • B. 

      2nd

    • C. 

      3rd

  • 7. 
    The genus Chiton is located in what class?
  • 8. 
    The genus Dentalium is located in what class?
  • 9. 
    The genus Busycon is found in what class?
  • 10. 
    The genus Helix found in what class?
  • 11. 
    The genus Limax is found in what class?
  • 12. 
    The genus Haliotis is found in what class?
  • 13. 
    The genus Ostrea is found in what class?
  • 14. 
    The genus Ptychobranchus is found in what class?
  • 15. 
    The genus Nautilus is found in what class?
  • 16. 
    The genus Sepia is found in what class?
  • 17. 
    The genus Octopus is found in what class?
  • 18. 
    The genus Loligo is found in what class?
  • 19. 
    What is the genus of this species?
  • 20. 
    What is the genus of this species?
  • 21. 
    What is the genus of this species?
  • 22. 
    What is the genus of this species?
  • 23. 
    What is the genus of this species?
  • 24. 
    What is the genus of this species?
  • 25. 
    What is the genus of this species?