Echinodermata Class: Crinoidea

Question 1

What does Crinoidea mean?

Answer 1

Lily form

Question 2

What organisms are in Crinoidea?

Answer 2

Sea lilies and feather stars

Question 3

What significant difference separates sea lilies from all the other echinoderms?

Answer 3

Sea lilies attach permanently to their substrate by stalk

Question 4

How is feeding among crinoids different from most other echinoderms?

Answer 4

Crinoids use outstretch arms for suspension feeding. Tube feet traps food and cilia in ambulacral grooves carries it to the mouth