Quiz  /  Mollusca Class 11 MCQ Questions With Answers

  • 1. 
    Bivalves reproduce by

  • expelling gametes into the water
  • internal fertilization by a specialized appendage

  • 2. 
    This appendage of the mollusc is used for movement and grasping.

  • Foot
  • Mantle
  • Radula
  • Ctenidia
  • Limpet

  • 3. 
    What class of molluscs does the snail belong to?

  • Gastropoda
  • Bivalvia
  • Cephalopoda

  • 4. 
    Which class of molluscs include clams, scallops, and mussels?

  • Gastropoda
  • Bivalvia
  • Cephalopoda

  • 5. 
    What type of symmetry do molluscs have?

  • Asymmetrical
  • Bilateral
  • Radial

  • 6. 
    These molluscs have a head and a modified foot that are now arms or tentacles.

  • Cephalopods
  • Nudibranches
  • Gastropods
  • Bivalves
  • Ctenidia

  • 7. 
    How do bivalves feed?

  • Filter feeders
  • Radula
  • Tentacles

  • 8. 
    Which class of Mollusks have many species that are sessile?

  • Gastropods
  • Bivalves
  • Cephalopods
  • arthropods

  • 9. 
    How do cephalopods and gastropods reproduce?

  • internal fertilization by specialized appendage
  • external fertilization by expelling gametes in the water

  • 10. 
    The shell of a mollusc is made out of what compound?

  • Calcium Carbonate
  • Calcium Phosphate
  • Calcium
  • Iron Phosphate
  • Strontium Chloride

  • 11. 
    This file-like ribbon of "teeth" is used by molluscs to scrape algae and other food off of rocks and can even drill through the shells of prey.

  • Calcium Carbonate
  • Radula
  • Foot
  • Mantle
  • Ctenidia

  • 12. 
    This is the outer fold of skin on molluscs, and is responsible for excreting the substance that forms the mollusc's shell.

  • Radula
  • Mantle
  • Foot
  • Ctenidia
  • Cockle

  • 13. 
    What does the term mollusca mean in Latin?

  • Soft-bodied
  • Hard-bodied
  • Foot
  • Slimy
  • Seafloor

  • 14. 
    Cephalopods use these colored pigment cells that can contract and expand in order to produce colors, textures and patterns.

  • Chromatophores
  • Ctenidia
  • Olfactory Receptors
  • Radulations
  • Mantle Pores

  • 15. 
    Which part of the Mollusk body contains organs?

  • Foot
  • Visceral Mass
  • Trochophore
  • Mantle

  • 16. 
    All molluscs have shells.

  • true
  • false

  • 17. 
    What class of molluscs does the nautilus belong to?

  • Bivalvia
  • Gastropoda
  • Cephalopoda
  • Cnidaria
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