Echinoderms - RS

Discover the world of echinoderms! This worksheet covers sea stars, symmetry, and key features.

Sea Stars Asteroidea Feather Stars and Sea Lilies Crinoidea Brittle Stars and Basket Stars Ophiuroidea Sea Urchins and Sand Dollars Enchinoidea Sea Cucumbers Holothuroidea Adult Echinoderms have radial symmetry and Larva have bilateral symmetry Spines for protection, connect to endoskeleton inside underneath the skin Ossicles calcium carbonate plates; form endoskeleton inside Pedicellaria keep surface clear of organisms Skin Gills and Tube Feet exchange gases and excrete nitrogen waste Eyespot Sense light and dark Madreporite Opening to water vascular system Gonads Reproductive Organs Starfish have both asexual and sexual reprodution True False Sea Stars have the ability to regrow lost parts called regeneration. True False Sea Stars have 2 stomachs called (Select 2 answers) cardiac stomach pyloric stomach digestive glands radial canal