Echinodermata

Which of the following is mildly venomous?
Long-Spined Sea Urchin
European Edible Sea Urchin
Which of the following a species of Long-Spined Sea Urchin?
Echinus esculentus
Diadema setosum
European Edible Sea Urchins can be found up to a depth of ________.
1,200 m.
12,000 m.
Which species name means "edible"?
Setosum
Esculentus
Which of the following has no excretory organs?
All animals in the phylum echinodermata
Only the Long-Spined Sea Urchin
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