Slide 1Second-largest phylum in number of species- over 100,000 described. Ecologically widespread- marine, freshwater, terrestrial (gastropods very successful on land) Variety…

Slide 1Phylum Mollusca Chapter 13 Part 1 of 3 Slide 2 General Characteristics Unsegmented Soft bodied critters - Bilateral symmetry Unsegmented Soft bodied critters - Bilateral…

Slide 1Molluscs & Annelids Zoology LS2014, Donald Winslow 3 March 2008, Following Hickman, et al., 2008 Ch. 16 (pp 332-344, 346-357) Ch. 17 (pp 363-378) Slide 2 Molluscs…

Slide 1PROTOSTOMES II MOLLUSKSARTHROPODS Slide 2 MOLLUSKS Clams, snails, slugs, chitons, octopuses Clams, snails, slugs, chitons, octopuses Probably evolved early—after…

Slide 1Phylum Mollusca Slide 2 Bilateral symmetry Body Cavity - Coelomate Body has three distinct regions –Visceral mass - central section, which contains the body's…

Slide 1 5. Molluscs Slide 2 Phylum Mollusca 200,000 species200,000 species –More species in ocean than any other animal group Soft body enclosed by calcium carbonate shellSoft…

Phylum Mollusca Phylum Mollusca Mollusks are soft-bodied animals that usually have an internal or external shell. Mollusks include: Snails Slugs Clams Squids Octopus Mollusca…