Echinoderm Phylum Math
The echinoderms are found in sea depths as well as in the intertidal zones.
Echinoderm phylum math. An echinoderm ɪ ˈ k aɪ n oʊ d ɜːr m is any member of the phylum echinodermata ɪ ˌ k aɪ n oʊ ˈ d ɜːr m ə t ə from ancient greek ἐχῖνος echīnos hedgehog and δέρμα derma skin of marine animals. There are five different classes of animals in the phylum. General characteristics of phylum echinodermata they are commonly known as spiny skinned organisms. Sea stars figure 1 sea cucumbers sea urchins sand dollars and brittle.
Echinodermata are so named owing to their spiny skin from the greek echinos meaning spiny and dermos meaning skin and this phylum is a collection of about 7 000 described living species. They are ecologically and geologically very important. But a few species are free swimming and some are affixed to the substratum. Starfish brittle stars echinoids which include the sea urchins and sand dollars sea cucumbers and sea lilies.
An interesting feature of the phylum echinodermata is that all the organisms belonging to this phylum are marine. Echinoderms are marine animals they are unisexual and their body have a tough spiny exoskeleton. Echinodermata are exclusively marine organisms. Examples of echinoderms include sea star sea urchins etc.
They are colourful organisms with unique shapes. The echinoderms belong to the phylum echinodermata and subphylum deuterostomia. Phylum echinodermata belongs to kingdom animalia they are triploblastic animals.