Botany - Animal Kingdom Question with Solution | TestHub

Echinodermata are triploblastic and coelomate animals, characterized by the presence of endoskeleton made up of calcareous ossicles, water vascular system, radial symmetry e.g., asterias (starfish), echinus (sea urchin), antedon (sea lily), cucumaria (sea cucumber) and ophiura (brittle star). Hemichordates are a small group of worm-like marine animals with the organ-system level of organization. They are bilaterally symmetrical, triploblastic, and coelomate
animals. The body is cylindrical and is composed of an
anterior proboscis, a collar, and a long trunk e.g., balanoglossus and saccoglossus.