Mollusk & Annelid Study Guide B1

Mollusk & Annelid Study Guide

Be able to answer these questions:

  • Name the kingdom for mollusks & annelids.
  • What is the oldest part of a bivalves shell called?
  • What muscles open & close a bivalves shell?
  • What tissue surrounds & protects the soft body of mollusks?
  • What is the larval stage of mollusks called & describe it?
  • What structure enables a squid to move by jet propulsion?
  • What are the external segments of an earthworm’s body called?
  • Name the internal shell of a squid.
  • How do earthworms breathe?
  • Earthworms are hermaphrodites. What does this mean?
  • What type of symmetry do annelids & mollusks have?
  • What are the respiratory organs of aquatic mollusks & annelids called?
  • What are aortic arches & what organism has them?
  • What type of circulatory system do mollusks & annelids have?
  • What is the tongue-like structure called that snails use to scrap algae?
  • What is the “lip” of an earthworm called & how is it used?
  • Name the muscular organ used by mollusks for movement.
  • Name several examples of bivalve mollusks.
  • Give an example of a univalve mollusk.
  • Give an example of a marine, shelled cephalopod mollusk.
  • What is the area of a mollusk’s body called that contains most of the body organs?

Know the class for each of the following mollusks & annelids:

  • clams & scallops
  • snails & slugs
  • clam worms
  • chitons
  • squid & octopus
  • leeches
  • earthworms

Be able to label these internal parts of a clam:

  • heart
  • gills
  • anus
  • adductor muscles
  • incurrent siphon

Be able to recognize pictures of these mollusks & annelids:

  • clam
  • snail
  • lugworm
  • leech
  • earthworm
  • chiton
  • squid
  • octopus