Echinodermata

  1. What type of symmetry do echinoderms have?
    pentamerous
  2. What does the water-vascular system do?
    • aids in locomotion
    • aids in feeding
  3. What do you call tube feet?
    podia
  4. What is the central area that extends the arms/rays of the organism?
    central disk
  5. Where can you find the podia?
    ambulacral grooves
  6. Where does water enter in the water-vascular system?
    madreporite
  7. What is the upper/smaller stomach called?
    pyloric stomach
  8. How much of the central disc must be cut off in order for a new sea star to form?
    1/5
  9. What are pedicellariae?
    pincers
  10. What does a starfish use for vision that is located at the end each arm?
    ocelli
  11. What can the cardiac stomach do?
    extend out of the mouth to digest material
  12. What is the order of the water-vascular system?
    • 1. madreporite
    • 2. stone canal
    • 3. ring canal
    • 4. radial canal
    • 5. lateral canal
    • 6. podia
  13. What is the order of the digestive system?
    • 1. mouth
    • 2. cardiac stomach
    • 3. pyloric stomach
    • 4. intestine
    • 5. anus
  14. What are characteristics of the class Asteroidea?
    • sea stars
    • have open ambulacral grooves where tube feet help them move
  15. What are characteristics of the class Ophiurodea?
    • brittle stars
    • have long thin arms with no organs in the arms
  16. What are characteristics of the class Echinoidea?
    • sea urchins
    • have movable spines
  17. What are characteristics of the class Holothuroidea?
    • sea cucumbers
    • have modified podia that form circumoral tentacles
Author
mecoop23
ID
349719
Card Set
Echinodermata
Description
echinoderm test
Updated