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Bio 11 SS Cnidarian and Porifera Review

Porifera and Cnidaria Exam Review




  • How many types of Porifera are there and how are they classified?
  • What are the Characteristics of poriferans (sponges) ?
  • What are the structures called on collar cells that move to create currents, moving water in and out of the sponge?
  • Which class of Poriferan contains spongin in its body?
  • What are the Characteristics of poriferans (sponges) ?
  • Adult sponges cannot move – how do sponges manage to colonize new areas?
  • Why does a sponge need to pump water through its body?
  • A sponge skeleton is made up of: (not calcium carbonate but the name of the structures)
  • The way that Poriferans (sponges) obtain food is by this process:
  • What is the middle layer of a sponge called?
  • In sponges, which cell type has flagella?
  • Through which structure does water enter a sponge? (not a pore)
  • The cells that move around the in the body of the sponge and ingest food particles are called?
  • Water movement through a sponge would follow which path?
  • Where does fertilization occur in a sponge?





  • Can you recognize the structures of a cross section of a polyp and a medusa?
  • A jellyfish can sting even after it is dead. How can this be?
  • How do Cnidarians get rid of metabolic wastes?
  • Characteristics of cnidarians (jellyfish, etc)?
  • A concentration of nerves and sensory organs at one end of an organism is called?
  • What is the advantage of a medusa form of a cnidarian (2)
  • What part of the Cnidarian life cycle is formed by budding?
  • What are the stinging cell and stinging structures called in a hydra called?
  • Which kind of digestive and circulatory system do Cnidarians have?
  • Which kind of symmetry do Cnidarians have?
  • What is the inner layer of cells in Cnidarians called?
  • Which layer of cells is missing in Cnidarians?
  • Which part of a Cninarian’s life cycle is sessile?
  • Some hydras are said to be “hermaphroditic”, what does that mean?
posted by Marc Bernard Carmichael in Biology Eleven,Cnidaria and have No Comments

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