Porifera and Cnidaria Exam Review
Porifera
- 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?
Cnidaria
- 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?
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