5 Written Questions

1. Many are found together, which makes reproduces better and easier
2. Skin gill; tube feet
3. tip of ray
4. Sea cucumber (Holothuriodea)
5. Sea urchin

5 Matching Questions

1. How do sea cucumbers move?
2. What kind of symmetry do echinoderms have?
3. skeleton of marine animals
4. On what side do they travel on?
5. What type of nitrogenous waste is excreted?

1. a Oral with tube feet
2. b ammonia because it gets diluted in the water
3. c Sand dollar
4. d Crawl with tube feet and endoskeleton
5. e 5- Part radial as adult; bilateral as larvae

5 Multiple Choice Questions

1. madreoporite
   1. Where do echinoderms live?
   2. Where does water enter?
   3. Where does water leave?
   4. What are tube feet used for?
2. External fertilization
   1. What kind of symmetry do echinoderms have?
   2. Where do echinoderms live?
   3. What kind of feeders are brittle stars?
   4. What kind of sexual reproduction do echinoderms have?
3. ossicles
   1. In the endoskeleton, what are the skeletal plates called?
   2. What does the water vascular system control?
   3. Asteroidea are what animal?
   4. Where are they eyespots located?
4. "spiny skin"
   1. What does echinoderm mean in Greek?
   2. Where do echinoderms live?
   3. Where does water enter?
   4. How do echinoderms respire?
5. Wastes, food, water, and nutrients circulate through the echinoderm by means of the water vascular system.
   1. What materials ad how do these materials circulate through the echinoderm?
   2. What does the water vascular system control?
   3. What are the characteristics of a typical echinoderm?
   4. Where is the anus and mouth located on an echinoderm?

5 True/False Question

1. Asteroidea are what animal? → Sea star
   

   True        False

2. Where is the anus and mouth located on an echinoderm? → Anus-aboral surface; mouth-oral surface
   

   True        False

3. Where is the digestive gland located? → tip of ray
   

   True        False

4. What kind of feeders are brittle stars? → grazers/herbivores/algae eaters
   

   True        False

5. What does the digestive system include? → nerve ring and radial canals through the rays (arms)
   

   True        False