PPT-Phylum Mollusca

The mollusks are invertebrate animals known as Mollusca There are more than 150000 species within this phylum Types of Molluscs snails clams squid cuttlefish octopus which are among the most neurologicallyadvanced invertebrates. 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. 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. PHYLUM MOLLUSCA. Invertebrates. Freshwater, marine, & terrestrial . Largest marine phylum. 23. % of . named marine species. Mantle. Radula. Ventral foot. CLASS CEPHALOPODA. Squids, octopods, cuttlefish, . 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. Subject. -Zoology. Chapter. -. Phylum . Mollusca. Phylum Mollusca. Phylum Mollusca. Protostomes. Lophotrochozoan group . Eucoelomates (coelomates). Tridacna squamosa. Tridacna gigas. Phylum Mollusca. Invertebrates. Chapter 6. Marine Ecology. Mr. Seifert. Cnidaria. Sponges. Platyhelminthes. Nematoda. Mollusca. Annelida. Annelida. General Characteristics. Segmented Worms. Hydrostatic Skeleton. Setae. More species (200,000 ) than any other animal phylum except Arthropoda. Soft body – often protected by CaCO. 3. shell. Unsegmented, typically bilaterally symmetrical. I. Phylum Mollusca. ©2004 Amanda Demopoulos. Phylum Nematoda. Phylum Annelida. Choanoflagellates. The Worm Characteristics. Bilateral. symmetry – the simplest organisms to exhibit this type of symmetry. Invertebrates – use . hydrostatic. pressure to provide structural support (made of . 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. : . Polyplacophora. . Chiton . sp. . 1. Mostly . marine. , attached to rocks near the sea shore. . 2. The body is . oval . in shape, . convex above and flattened below. GRAM NEGATIVE BACTERIA. Wide. . morphological. and . metabolic. . diversity. .. Clinical. , . environmental. , and industrial . relevance. Phylum. . with. . highest. . number. of . cultured. . 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. Phylum Spirochaetes. 4. . Phylum Spirochaetes. Gram . negative. Aquatic. . environments. ; . some. . pathogens. Unique. . morphology. . . Endoflagella. . 4. . Phylum Spirochaetes. Treponema: . animal and human hosts, microaerophilic, very sensitive to environmental stress .