PPT-Chapter 27 Worms and Mollusks

271 Flatworms What is a Flatworm What are some of the defining features of flatworms What is a flatworm Flatworms are soft flattened worms that have tissues and internal organ systems They are the simplest animals to have three embryonic germ layers bilateral symmetry and . Chapter 35 . Examples with Scientific Names. Scientific Name Common Name. Mollusks:. Athleta toumeyi. . Fossil Gastropod. Caprinuloidea. perfecta. . . Prabhaker Mateti. Mateti, Viruses, Trojans and Worms. 2. Virus Awareness. Virus Bulletin . http://www.virusbtn.com/. . Technical journal on developments in the field of computer viruses and anti-virus products . 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. Mrs. . aRusso. Grade 7- Life Science. General Characteristics of Worms. Slender, legless invertebrates. Have . organs. (digestive, reproductive, etc.). Show bilateral . symmetry . (matching halves). Lesson 3: How do we classify invertebrates?. Opening Activity. ·. Open Science textbook to page 18.. ·Open Science Workbook to page 5A to review home learning.. ·Open Science folder to review vocabulary words and outline for the chapter.. Prepared by : Nada H. Lubbad. Introduction. :. Soft bodied animals.. - . name from Latin word “ mollus” meaning soft.. The second largest phylum.. The scientific study of Mollusks is . . 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.. 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. . By : Jennifer Levinsky. ECD 133. July 30, 2014. Science Concepts. Life Science: The Underground Environment. The worm’s underground habitat is a changing environment and a living world.. Worms need soil to live.. 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.. Lesson . 1. . Paragraph . Structure. Paragraphs: . consist . of one or more sentences about a . single. thought. . usually have more than one sentence. . never. have more than one idea. (Sentences must be related to the main idea.) . PHYLUM MOLLUSCA. ___________________________________are . all mollusk. . There is a wide variety of animals in this phylum—from the . slug. that moves very slow to the . squid. who is jet-propelled. . The worm you are most probably familiar with is…….. . THE EARTH WORM. Where can worms be found?. Most worms can be found at the bottom of the water column, near ocean sediment.. Some live closer to the surface.. 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.