PPT-Echinoderms

Members of this group are sea stars sea urchins sea cucumbers and sand dollars Echinoderms have an internal skeleton called a endoskeleton made of harden plates that makes the animal bumpy and irregular texture. 1 The embryos of deuterostomes develop quite differently from those of protostomes Protostomes and Deuterostomes Deuterostomesthe ehino0erms hor0ates an0 a few other groupsshare a mo0e of 0evelopment that is quite 0ifferent from other animals 47 Order Toll Free 877 6615355 Order by FAX 843 4700237 The Phylum Echinodermata consists of about 6000 living species all of which are marine This video program compares the five major classes of living echinoderms in terms of basic functional biology pincers Echinoderms Echinoderms are are found in all the found in all the oceans oceans of the world of the world What is an echinoderm What is an echinoderm brPage 2br SKIN all have a hard SKIN all have a hard spiny spiny or bumpy or bumpy endosk Phylum . Arthropoda. Most diverse and successful animals of all time. Segmented body, tough . exoskelton. , jointed appendages. Classified based on number and structure of their body segments and appendages. Mollusks, Arthropods, and Echinoderms. 7. th. Grade Science. Mollusks. __________ - invertebrates with soft . unsegmented. bodies that are often protected by a harder outer shell. _________ - a thin layer of tissue that covers the internal organs – produces the hard shell. Echinoderms (phylum Echinodermata) include sea stars and sea urchins. Chordates (phylum Chordata) include the vertebrates. Echinoderms and chordates constitute the clade Deuterostomia. © 2011 Pearson Education, Inc.. Characteristics of Echinoderms. One of the strangest and most unusual phylum in the animal kingdom.. Echinoderms are . deuterostomes. , which is a trait they share with chordates (vertebrates). . All of the other invertebrates we learned about so far have been protostomes.. Cnidaria. Ctenophora. Platyhelminthes. Rotifera. Nematoda. Nemertea. Mollusca. Annelida. Arthropoda. Bryozoa. Phoronida. Brachiopoda. Echinodermata. Chordata. No true tissues. radial symmetry. diploblastic. Biology I: Chapter 28. ARTHROPODS. ARTHROPODS. Arthropods. Phylum Arthropoda. Insects, crabs, centipedes, spiders. Segmented body. Tough exoskeleton made of chitin. Jointed appendages. Evolution of Arthropods. Evolutionary Perspective. Flourished in 400 million year-old seas. Many were attached suspension feeders.. 12 of 18 classes now extinct. Remain a major component of marine ecosystems. Characteristics. Developmental Variations. During embryonic development, the process of . gastrulation. forms the digestive cavity.. Gastrulation. varies in the animal kingdom. No . gastrulation. (. placozoans. ). echinodermata. mean?. Spiny skin. Examples of echinoderms. What is an echinoderm?. Typically have no anterior/posterior end. Lack cephalization. Invertebrates. Questions. What is an invertebrate?. What other phyla are invertebrates?. Animals Without Backbones Chapter 2: The Animal Kingdom Scientists keep track of Earth’s animal species by observing their similarities and differences . An animal with symmetry has body parts that match other body parts around a midpoint or . Class . Pterobranchia. (Sea Angels). Class . Enteropneusta. (acorn worms). Small group of marine worms that show similarities. to Echinoderms and Chordates. Tornaria. of Acorn Worms . Auricularia.