1. • Animals that have a Chordatesbackbone are calledvertebrates.• Vertebrates belongto phylum chordata(called chordates)• Vertebrates make uplargest group ofchordates…

Phylum Mollusca Phylum Mollusca includes snails and slugs, oysters and clams, and octopuses and squids. Phylum Mollusca Molluscs evolved in the sea and most molluscs are…

EAT223 Thermofluids and Engines Turbomachinery Summary ■ Motivation ■ Principles of operation ■ Dimensional analysis ■ Pump selection Motivation ■ The most common…

Slide 1 Gastropods 1 Phylum Mollusca Class Gastropoda Slide 2 Gastropods 2 Class Gastropoda Defining characteristics – Visceral mass and nervous system become twisted 90-180°…

Slide 1 1 Coelomate Invertebrates Chapter 33 Slide 2 2 Coelomates Coelomates have a new body design that allows for the development of complex tissues and organs. – allows…

Slide 1 Phylum Chordata 1 Tunicates Amphioxus Slide 2 Phylum Chordata 2 Included are 48,000 species the majority of which are vertebrates – 1,400 species are invertebrates…

Slide 1 Slide 2 Phylum Mollusca Slide 3 Ancestral Protist segmentation true tissue radial symmetry bilateral symmetry Deuterostomes: eucoelom Protostome: schizocoelem pseudoc…

Gastropods * Phylum Mollusca Class Gastropoda Gastropods Gastropods * Class Gastropoda Defining characteristics Visceral mass and nervous system become twisted 90-180°…

How do the Annelids fit in? unknown common ancestor Porifera Cnidaria Platyhelminthes Nemertea Nematoda Rotifera Annelida Phylum Annelida the segmented worms Annelida Characteristics…

Segmented Worms Chapter 17 Annelids and Allied Taxa Phylum Annelida Class Polychaeta Class Oligochaeta Class Hirudinida Phylum Echiura Phylum Sipuncula Annelids and Allied…