The Fossil Record Indicates Crinoids Are More Numerous Now Than

Q8: According to recent reclassification,the Chaetognatha are now

Q9: Acornworms<br>A)are usually found in deep water zones.<br>B)do

Q10: Sea stars have light sensitive organs,the _,at

Q11: Echinoderms have the ability to osmoregulate regardless

Q11: The larvae of echinoderms have _ symmetry.

Q14: A unique characteristic of echinoderms is<br>A)the endoskeleton

Q16: The Class _ have internal respiratory trees

Q18: The water vascular system of sea stars

Q29: The mouth of the brittle star is

Q85: The ancestor of the echinoderms had _