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☰ Search Explore Log in Create new account Upload × General Zoology Handout Lab 3 Phylum: Porifera: Exercise 7 Animals in this phylum are all metazoans (multicellular). They have little or no tissue organization and are said to be at the cellular level of organization. Important terms: pores, canal systems, spongocoel, radial canal, incurrent canal, choanocytes, spicules and osculum. Sponges have canal systems running throughout their bodies that are one of three types: asconoid, syconoid or leuconoid (Figure 7-1 on page 110). Understand these three types of body plans. Look at slides of Grantia choanocyte (refer to Figure 7-1 pg 110), pay special attention to the Radial Canal, Spongocoel, Apoplyle, Choanocytes. Sketch what you see. Look at the domo slides of Spongilla Spicules and Gemmules (Fig 7-6 pg 114 and 7-2 pg 111). Look at the preserved specimens scattered around the room and try to classify them down to class. You are responsible for the information on pages 109-115. Class Calcarea: all marine; spicules of calcium carbonate (same compound as mammalian bone matrix); canal systems are asconoid, syconoid or leuconoid. Class Hexactinellida: all marine; siliceous 6-rayed spicules often unite to form a network; body often cylindrical or funnel shaped; canal system syconoid or leuconoid. Class Demospongiae: some freshwater, most marine; commercial bath sponges are in this class, canal systems are leuconoid Phylum: Cnidaria: Exercise 8 Cnidaria are radiate animals. They have radial symmetry (around one central axis like a circle) and are in what is called the tissue level of organization because they have tissues but no true organs. Radiate animals all have the following list of features: 2 primary germ layers, a gastrovascular cavity (GVC) opening to the outside by a mouth enabling some radiates to have a hydrostatic skeleton. Cnidarians have two main types of body forms, polyp and medusa, somewhere in their life cycle. Look at the preserved specimens and the slides of the Cnidaria that are available in the lab. You are responsible for the specimens and information on pages 119-132. Class Hydrozoa: both polyp and medusa represented, found in fresh water and marine. Look at the slides of the Hydra and Obelia. Additionally look at the preserved specimens. Sketch the Hydra (Fig. 8-1) and the Obelia. Sketch a cnidocyte (Fig. 8-1). Note and try to identify the following: tentacles, hypostome, mouth, cnidocyte, nematocyst, gastrovascular cavity. Class Scyphozoa: solitary, polyp reduced, true jellyfish; Look at the specimens in the back of the room, and try to identify the following: tetramerous radial symmetry, umbrella, mouth, ring canal, oral arm, tentacle. Class Anthozoa: all polyp, GVC subdivided by mesenteries, corals and anemones; Look at the specimens in the back of the room, and try to identify the following: pedal disc, oral disc, mouth, tentacle. Download 1. Science 2. Biology 3. Zoology Lab3.doc File Porifera Cnidaria Test Review Vocabulary monoecious cnidocyte Porifera and Cnidaria Review Sheet/Practice Questions Ch 33 Invertebrates Stations_assignments - TeachersWebResource.com in sponges LABORATORY 2: PHYLUM PORIFERA Porifera - Zoology Lab Phylum Porifera – Diversity and Structure Protozoans, Protists, Alage, Porifera, Cnidaria, and Ctenophora Test: Biology 120 Lab Introduction meaning "pore bearer" - Dr. Bondrup Sponges, ctenophores, cnidarians MARINE BIOLOGY: LECTURE 3 Non-Coelomate Animals Phylum: Porifera “The sponges” Porifera Book Work Ch 26- Sponges and Cnidarians Taxonomy AP Biology Study Guide Sponge Lab - Merrillville Community School studylib © 2017 DMCA Report