1. Jack, Jacob, Kylie Period 2
ECHINODERMATA
Jack, Jacob, Kylie
Period 2

2. Symmetry
Radial Symmetry

3. Feeding Animals can be: -Filter Feeders -Carnivores -Detritivores
-Herbivores
-Omnivores

4. Circulation Open circulatory system
Cilia circulating fluids through each arm
A network of of fluid-filled nerve networks
Function in gas exchanges

5. Excretion
Water vascular systems
Anus
Mouth

6. Response Nerve ring surrounding their mouth
Nerve extends through a series of networks
Networks go towards each of the body’s regions

7. Movement Ossified skeletons Starfish use their feet or limbs to move
Sea Cucumbers use their spines

8. Reproduction Both asexually or sexually
Fertilization of eggs by spermatazoa

9. Respiration Poorly developed Gills and tube feet
Take in oxygen and pass out carbon dioxide

10. Classes/ Examples Crinoidea- (Sea lillies) Asteroidea- (Starfish)
Ophiaroidea- (Brittle stars & Snake Stars)
Echinoidea (Seas Urchins & Sand dollars)
Itolothuroidea (Sea Cucumbers)