In echinoderms, where does breathing take place through thin-walled structures located on the underside of the animal?
A. skin gills
B. spiny skin
C. statocysts
D. tube feet

I believe its A but not sure.

Question

In echinoderms, where does breathing take place through thin-walled structures located on the underside of the animal? 
	A.	skin gills
	B.	spiny skin
	C.	statocysts
	D.	tube feet

I believe its A but not sure.

petiteme · Answer

On the ventral side of an echinoderm (say, a sea star, for example) there are hundreds of tiny feet arranged into rows on each appendage. These are called tube feet.

petiteme · Answer

http://www.ask.com/question/how-do-echinoderms-breathe

anonymous · Answer

I don't get it lol.

petiteme · Answer

Here: http://wiki.answers.com/Q/Do_echinoderms_breathe_through_gills?#slide=2

anonymous · Answer

so hel lyeah its A