The organisms attached to the substratum, generally, possess (a) one single opening of the digestive canal (b) cilia on the surface to create water current (c) radial symmetry (d) asymmetrical body

The organisms attached to the substratum, generally,
possess
(a) one single opening of the digestive canal
(b) cilia on the surface to create water current
(c) radial symmetry
(d) asymmetrical body
by

1 Answer

Answer :

(c) radial symmetry
by

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