Botany - Animal Kingdom Question with Solution | TestHub

Sea fan is Gorgonia. It belongs to Phylum Colenterata. These have tissue level of organization and are diploblastic organisms. These also show presence of Cnidoblasts which are stinging cells and thus are cnidoblasts. Sea lily is Antedon, Sea cucumber is Cucumaria and Sea urchin is Echinus. These three belong to Phylum Echinodermata. These animals have spiny body (Echino means spines and derma is skin). These also show presence of water vascular system.