Other questions in this quiz

2. What is the Hinge Line?

  • The plane of radial symmetry where shells meet
  • The plane of symmetry where two valves are joined together
  • The line marking the limit of attachment of the mantle

3. What is the Umbo?

  • Area of most curvature, marking the point of first growth
  • A depression within the shell, used to filter feed
  • Point of shell attaching the two valves
  • The lines which represent layers of new growth

4. What are the Adductor Muscle scars?

  • The limit of attachment of the soft tissue
  • Where muscles are attached to the shell
  • The scars from secreting new layers of shell

5. What is the Socket?

  • The point of attachment between the siphons and the right valve
  • A depression which fits over cardinal teeth on the right valve
  • A depression in the shell where the adductor muscle rests

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