Chp%2017%20Part%202

Chp%2017%20Part%202 - Lecture Notes Chapter 17 Part 2...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture Notes Chapter 17 Part 2 Objectives ü Describe the body structure of sponges, cnidarians, flatworms, and roundworms, and explain how each group feeds. ü Describe two roundworm traits that were not found in previous animal phyla. ü Describe the structure and function of the three parts of a mollusk body. Distinguish among gastropods, bivalves, and cephalopods, and provide examples of each. ü Describe the general structure of annelids. Distinguish among earthworms, polychaetes, and leeches, and provide examples of each. ü Describe the general structure of arthropods, and discuss the advantages and disadvantages of an exoskeleton. Also distinguish among arachnids, crustaceans, millipedes, centipedes, and insects, and provide examples of each. ü Describe the general structure of echinoderms, and explain the significance of the water vascular system. ü Describe the four characteristics of the phylum Chordata. ü Distinguish among the following aquatic groups: agnathans, Chondrichthyes, ray-finned fishes, lungfishes, and lobe-finned fishes. Describe the significance of the swim bladder. ü Describe the dual life of amphibians. ü Describe the adaptations of reptiles to living on land. ü Describe three adaptations for flight found in birds. Compare birds to reptiles, noting their similarities and differences. ü Distinguish among monotremes, marsupials, and eutherian mammals, and provide examples of each. Describe the characteristics common to all mammals. Part 2 of Chapter 17 covers the major animal phyla and their characteristics. When you began to review for the test pay close attention to what phyla is the first to exhibit certain characteristics (ex. bilateral symmetry, a complete gut, etc.) and which characteristics are significant to specific phyla. IV. Major Invertebrate Phyla A. Introduction 1. Vertebrates a. consist of only one subphylum within the phylum Chordata, and b. are less than 5% of all animal species. 2. Invertebrates represent more than 95% of the animal kingdom. B. Sponges—phylum Porifera (Review figures 17.9–17.10) 1. Sponges: a. are sessile (no movement) b.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
c. range in height from about 1 centimeter (cm) to 2 meters (m), d. have no nerves or muscles, and e. consist of about 9,000 species found in both marine and fresh water 2. The body of a sponge resembles a sac perforated with holes. a. Water is drawn through the pores into a central cavity, then flows out of the sponge through a larger opening, the osculum. b. Most sponges feed by collecting bacteria from the water that streams
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 14

Chp%2017%20Part%202 - Lecture Notes Chapter 17 Part 2...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online