asked 365 views
0 votes
Gas exchange in an echinoderm takes place through

A. book lungs.
B. skin gills.
C. lungs.
D. none of the above.

asked
User Sachin J
by
7.7k points

1 Answer

7 votes
D. None of the above
answered
User ViKiG
by
7.6k points
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