BIO M3 Quizzes

• Which of the annelid classes indicates the relative number of bristles (chaetae) its members have?

  Oligochaeta & Polychaeta
• Which characteristic is found only among annelids?


  a clitellum
• how many segments do true leeches have?

  34
• which molluscan class includes organisms that are primarily suspension feeders? 

  Bivalves
• The structure of molluscs that forms the shell and houses the gills is the...

  Mantle
• The adaptation of bivalves to a sedentary, filter-feeding lifestyle that exploits the sand of a beach as a habitat, has led to the loss of the ________ and the radula.

  Head
• A terrestrial mollusc without a shell belongs to which class?

  Gastropods
• What is the role/function of the Ampullae of Lorenzini?

  To sense electrical fields
• Is the following statement about tapeworm feeding methods correct? They absorb nutrients across their body walls

  true
• Cnidarians and ctenophorans differ from other eumetazoans by having....

  Radial symmetry
• Cestodes are monoecious and lack a digestive tract. The reproductive units of the cestodes are called...


  Proglottids
• While most of the platyhelminths are free-living or endoparasites, which one of the following taxa has an ectoparasitic life cycle?

  Monogenea