Which of the following characteristics is of
\( \mathrm{P} \) echin...
Which of the following characteristics is of
\( \mathrm{P} \) echinoderms?
W
(1) Smooth skin and radial symmetry
(2) Spiny skin and bilateral symmetry
(3) Spiny skin and radial symmetry
(4) Spiny skin and asymmetry
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