The tests remind people of the large coins that were being used as money.
200
List some animals found in this group.
What are sea cucumbers, feather stars, brittle stars, sea urchins, sand dollars, and sea stars?
200
What is the large hole on the underside of a sea star?
It's mouth!
200
How do brittle stars move across the ocean floor?
very quickly
200
Feather star arms are called
rays
200
Are the sand dollars you find on the beach dead or alive?
dead
300
Some things that all echinoderms have in common.
no eyes, no brain, and tube feet
300
A sea star's favorite meal is
What is a bivalve?
300
What does a brittle star do if it's arm is touched?
It drops it off. (So cool!)
300
A crinoid's feelers are called
cirri
300
How does a sea cucumber defend itself?
It spills its guts!
400
What is special about these animals' feet?
They are tube feet.
400
What did a fisherman once do to make to keep sea stars from eating the clams? (Looking for a word that starts with R in your answer.) How'd that work out?
Chopped them in half thinking they were killing them. They regenerated, and the population doubled! Oops!
400
How do brittle stars move differently than sea stars?
They do not use their tube feet, but they use muscles to move.
400
A sea urchin shell is called a
test
400
What is a sea cucumber's favorite snack?
sand!
500
What 2 jobs do tube feet do?
breathing and "tongues" - tasting everything it touches to see if it would be a good meal
500
Explain how a sea star eats.
It stomach comes through it's mouth!
500
What is the special job that basket stars have?
They are filter feeders.
500
What are the teeth of a sea urchin called?
Aristotle's lantern
500
What does the "Legend of the Sand Dollar" have to do with Jesus?