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 8 groups of invertebrates are the arthropods, poriferans, platyheminthes, coelenterates, nematoeds, mollusks, echinoderms, and annelids
they are in the shape of a star
their body plan
sponges+mollusks+arthropods+worms+octopods+echinoderms
The eight groups are:* Mollusks * Echinoderms * Arthropods * Annelids * Nematodes * Porifera* Platyhelminthes * Coelenterates Or go to:What_are_the_8_groups_of_invertebrates
The four main groups of eukaryotes are plants, animals, fungi, and protists. These groups encompass a wide variety of organisms with different characteristics and modes of life.
Sea stars, brittle stars, sea urchins, and sea cucumbers.
An invertebrate is an organism that lacks a backbone. The 6 groups of invertebrates are sponges, cnidarians, worms, mollusks, echinoderms and arthropods.
The five main groups of materials are metals, polymers, ceramics, composites, and semiconductors. Each group has unique properties and characteristics that make them suitable for different applications in various industries.
Approx. 7, 000 species that fall into five clades(sub-groups)
Echinoderms, such as starfish and sea urchins, are considered closely related to chordates, including corals, due to their shared evolutionary lineage within the deuterostomes, a major group of animals characterized by specific developmental features. Both echinoderms and chordates exhibit bilateral symmetry at some stage of their development and share common genetic and embryological characteristics. Moreover, molecular studies have shown significant genetic similarities between these groups, supporting their close evolutionary relationship.
Echinoderms are invertebrates with an internal skeleton and a system of fluid-filled tubes called water vascular system.