Question

Sand dollars are radially symmetrical and have an internal skeleton but no backbone. Which phylum do sand dollars belong in?

chordates
echinoderms
arthropods
mollusks

Answer 1

echinoderms

Step-by-step explanation:

I hope this helps

Answer 2

echinoderms

Step-by-step explanation:

they are in the same family as starfish and sea urchins