Vocabulary
What are echinoderms?
Marine invertebrates with 5 way radial symmetry and a water vascular system
What are the two characteristics of echinoderms?
Body-shows radial/pentamerous (5 parts) symmetry, Ambulacral System, neither a respiratory system nor a excretory system, Endoskeleton, Sensory organs, Regeneration, etc.
How do echinoderms reproduce?
By spawning (eggs and sperm are released into the water)
What echinoderm is soft and squishy sea scavengers?
Sea Cucumber.
What are the sensory organs of Echinoderms?
Sensory organs: light-sensitive organs (eye spots)+touch sensitive ones (in the tube feet)
How much of the body is needed for echinoderms to be able to regenerate? (a proportion)
1/5
Where do echinoderms live? Name three places where they can be found.
Tropical water, cold water, intertidal zones, deep ocean
What echinoderm is covered in sharp spines?
Sea Urchin.
What is an Ambulacral System?
Water vascular system that allows them to move, breathe, take nutrients and eliminate waste.
What two systems do echinoderms not have?
respiratory system, excretory system
How do echinoderms move?
They move by alternately contracting muscles that force water into the tube feet which propels them forward.
What are the prey of echinoderms?
Echinoderms can be carnivores, herbivores, omnivores, or filter feeders, depending on the species and class.
Why are echinoderms important? Name 2 reasons.
Help recycle nutrients, control algae populations, provide food for fish, otters, and humans, their skeletons break down into sand in some regions
What are 3 examples/types of Echinoderms?
Sea Stars, Brittle Stars, Sea Urchins, Sand Dollars, Sea Cucumbers
How many canals does the water separate into?
5
What is their predator?
Manta rays, Sharks, other large bony fishes and other starfish, birds and crustaceans.
How do some species reproduce asexually?
By deliberately splitting their body in half or breaking off an arm. Each part becomes a whole new animal.