PPT-Phylum Molluscs

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 . L. U. S. C. S. . M. O. L. L. U. S. C. S. -. Molluscs. Origin of the word mollusc: . From the Latin word . Mollis. meaning soft. Animals in this phylum include: . Snails, Octopus, Squid, clams, . Level of organization: . 1. Phylum Annelida. Class Polychaeta. Class Clitellata. Phylum Annelida. 2. Annelid Characteristics. Defining Characteristics. One or more pairs of chitinous setae. The phylum includes polychaetes, earthworms, leeches, and vestimentiferans. Thrive in fresh water, salt water and soil.. Many are motile, with pseudopods (“false feet”) used for locomotion.. Some are parasitic species, found in animal intestines.. Entamoeba. . histolytica. 5 - . 1. Coral, Anemones, Sea Fans, and Jellyfish. Chapter 5 Pages 5-33 & 5-34. Characteristics of Phylum Cnidaria. 5 - . 2. Coral, Anemones, Sea Fans, and Jellyfish. Chapter 5 Pages 5-33 & 5-34. 5 - . 1. Coral, Anemones, Sea Fans, and Jellyfish. Chapter 5 Pages 5-33 & 5-34. Characteristics of Phylum Cnidaria. 5 - . 2. Coral, Anemones, Sea Fans, and Jellyfish. Chapter 5 Pages 5-33 & 5-34. PHYLUM. Deanne L. de . Asis. Jessica . Consad. KINGDOM. MOLLUSCA. introduction. content. conclusion. Evolution. Definition. Life History and Ecology. Taxonomy. Morphology. Relations with Humans. Diversity. Mollusca. The . Chitons. , Gastropods, Bivalves and Cephalopods. The . molluscs. are a diverse group of soft bodied invertebrates. Some varieties of . molluscs. produce an external shell (“test” or “valve”)made of calcium carbonate. PHYLUM MOLLUSCA by MRS OZEMOKA H.J. is licensed under a . Creative Commons Attribution-. NonCommercial. -. ShareAlike. 4.0 International License. .. PRE- TEST. What are Annelids?. State the differences between the three classes of Annelids.. The term . m. ollusc. . means “soft.” A . mollusc . is a diverse animal and is a member of the phylum Mollusca group. Around eighty five thousand species of molluscs have been recognized. Molluscs reproduce sexually. Slugs and snails mate to fertilize eggs. Aquatic molluscs lay eggs that hatch into small free-swimming larvae. Many molluscs have hard external shells which they use for protection. Molluscs range in size and are usually found in marine habitats, but a few . Aschelminthes : Roundworms Not the Phylum name 7 Phyla in this grouping Characteristics Most are freshwater Cylindrical Unsegmented Bilaterally symmetrical Triploblastic ( pseudocoelomates ) Dioecious ). (8,761 known species). General Description: . Simplest animals, multicellular. No organs or body systems. Skeleton composed of spongin (soft) and spicules (hard). Symmetry: . Asymmetrical. Feeding: . BY. MR LAOYE, B. J.. Email; . babafemif@abuad. .edu.ng. Instagram. : @. femilaoye. Telephone: (+234)8136916125. HEMICHORDATA. Hemichordates were formerly members of the phylum . chordata. But over the years they were separated from chordates because scientists found out that they lacked a Notochord. In biology, . phylum.  . (.  . plural. : . phyla. ). .  is a . taxonomic rank.  below . kingdom.  and above . class. .. phyla can be thought of as grouping organisms based on general specialization of . A. . Bilateral. Symmetry. B. Presence of a muscular . foot. C. . Mantle. formed by Dorsal Body wall. D. True . Coelom. E. Complex . Digestive. System. F. . Gas exchange . through gills, lungs, mantle, or body surface.