There are actually four major classes of echinoderms. These are Crinoidea, Asteroidea, Ophiuroidea, Eichionidea, Holothuroidea, and Concentricyloidea. The animals in these range from sea lilies to sea urchins.
Echinoderms are invertebrates with an internal skeleton and a system of fluid-filled tubes called a water vascular system. There are four major groups of echinoderms: sea stars, brittle stars, sea urchins, and sea cucumbers.
The four major type of economically based interest groups are Business, Labor, Agricultural, and Professional Groups.
The four major type of economically based interest groups are Business, Labor, Agricultural, and Professional Groups.
The major invertebrate groups include arthropods (insects, spiders, crustaceans), mollusks (snails, clams, squids), annelids (earthworms, leeches), cnidarians (jellyfish, corals), and echinoderms (starfish, sea urchins). These groups represent a diverse array of organisms that play important roles in ecosystems.
The four major type of economically based interest groups are Business, Labor, Agricultural, and Professional Groups.
sponges+mollusks+arthropods+worms+octopods+echinoderms
pouje
i dont know
The eight groups are:* Mollusks * Echinoderms * Arthropods * Annelids * Nematodes * Porifera* Platyhelminthes * Coelenterates Or go to:What_are_the_8_groups_of_invertebrates
Porifera (Sponges)Cnidaria (Coelenterates)Flatworms (Platyhelmenthes)Roundworms (Aschelmenthes - Nematode)Segmented worms (Annelids)Mollusks (Soft-Bodied/ hard shelled Animals)Echinoderms (Spiny-Skinned Animals)Arthropods
Sea stars, brittle stars, sea urchins, and sea cucumbers.
They are the Ashanti, Arab, Swahili and the Bantu.