The phylum Cnidaria covering Hydra, Obelia, Gnionemus, Physalia, Aurelia, Matridium, Meandrina, Metridium, Gorgonia, Tubipore.
True
False
Bilateral Symmetry
Radial Symmetry
TopsyTurvy Semmetry
One tissue layer.
Two tissue layers.
Three tissue layers.
External Covering
Internal Covering
The tentacles
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