PPT-Mollusks and Annelids

Chapter 35 Examples with Scientific Names Scientific Name Common Name Mollusks Athleta toumeyi Fossil Gastropod Caprinuloidea perfecta . Welcome to Discovery Education Player. Characteristics of flatworms. Soft, flattened worms with tissues and internal organ system. Simplest animals to have three embryonic germ layers. Bilateral symmetry . Instructor: . Almonther. I. . Alhamedi. The Islamic University of Gaza. Department . of . Biology. E-mail : . mhamedi@iugaza.edu.ps. Web page :. http. ://site.iugaza.edu.ps/mhamedi. General characteristics . Unit 4. Mollusk Introduction. Phylum Mollusca . Molluscus. . = . soft. Soft-bodied animals that usually have an . internal. or . external . shell.. Includes . snails. , slugs, clams, . squids. , and octopi. Tough Softies!. Kingdom: . Animalia. Phylum: . Mollusca. . (Mollusks). Class: . Bivalvia. . (Bivalves). Class: . Cephalopoda. . (Cephalopods) . Class: . Gastroboda. . (Gastropods). Mollusca. is the second most diverse (second most number of species) phylum in the animal kingdom!. Sarah . Whitebloom. Matt Jones. Eddie Frere. Objective: SWBAT describe what a mollusk is, the different types of mollusks, examples, and their functions . Warm-Up. What is a mollusk?. What are the 3 types of mollusks?. 27-1 Mollusks. I. What is a Mollusk?. A. Phylum Mollusca Origin: from Latin . Molluscus. = soft. B. Contains animals that look and act very differently from each other. C. Mollusks: Soft-bodied animal that have an internal or external shell. Over 50,000 species. Coelomate. , . Protostomes. , Bilaterally symmetrical. Mostly marine, although some live in fresh water or land.. Generally soft-bodied with a hard shell. However, squid & octopi have internalized, reduced or lost their shells.. Week . 6 . Discussion. Overview of Protostomes. Most diverse and abundant animals on Earth. 22/30 animal phyla are protostomes. Arthropods (insects, crustaceans). Mollusks (snails, claims, squid). Annelids (earthworms, leeches). Mollusks. Characteristics of Mollusks. These are soft-bodied invertebrates, have bilateral symmetry, and usually 1 or 2 shells. . Most mollusks live in water, but a few live on land.. Examples are: snails, clams, and squid. . Phylum Mollusca. Includes . snails and slugs, oysters and clams, and octopuses and squids. .. Bivalves. Nautilus. Soft-bodied. invertebrate. Covered with protective . mantle. that may or may not form a hard, . Characteristics of Mollusks. Mollusks are invertebrates with soft, . unsegmented. bodies that are often protected by a hard outer shell.. They also have a thin layer of tissue called a . mantle. that covers its internal organs.. . Complete . circulatory system with capillaries, arteries and veins. . Body . wall made of circular and lengthwise muscles. . Continuous . gut running from mouth to anus with own musculature. . Bristle-like . I. What is a Mollusk?. A. Phylum . Mollusca. Origin: from Latin . Molluscus. = soft. B. Contains animals that look and act very differently from each other. C. Mollusks: Soft-bodied animal that have an internal or external shell. Includes . snails and slugs, oysters and clams, and octopuses and squids. .. Bivalves. Nautilus. Soft-bodied. invertebrate. Covered with protective . mantle. that may or may not form a hard, . calcium carbonate shell .