Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 28, Problem 27CTQ
Compare the structural differences between Porifera and Cnidaria.
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Compare and contrast the Phyla Porifera and Cnidaria. Think: Symmetry, Form and function, Tissue layers (present or absent, if present which are represented), Musculature/how they move, Reproduction, Nervous system and sensory structures, Respiration, Digestion (and how they feed), and comment on unique cell types found in each.
Compare cnidarians and ctenophores, giving five ways in which they resemble each other and five ways in which they differ
Describe the structure and function of the stinging cells for which cnidarians are named.
Chapter 28 Solutions
Biology 2e
Ch. 28 - Figure 28.3 Which of the following statements is...Ch. 28 - Figure 28.21 Which of the following statements...Ch. 28 - Figure 28.45 Which of the following statements...Ch. 28 - Mesohyl contains: a polysaccharide gel and dead...Ch. 28 - The large central opening in the parazoan body is...Ch. 28 - Most sponge body plans are slight variations on a...Ch. 28 - Cnidocytes are found in phylum Porifera phylum...Ch. 28 - Cubozoans are polyps medusoids polymorphs spongesCh. 28 - While collecting specimens, a marine biologist...Ch. 28 - Which group of fllatworms are primarily...
Ch. 28 - The rhynchocoel is a. circulatory system...Ch. 28 - Annelids have (a): pseudocoelom true coelom no...Ch. 28 - A mantle and mantle cavity are present in: phylum...Ch. 28 - How does segmentation enhance annelid locomotion?...Ch. 28 - The embryonic development in nematodes can have up...Ch. 28 - The nematode cuticle contains. glucose skin cells...Ch. 28 - Crustaceans are ecdysozoans nematodes arachnids...Ch. 28 - Flies are ___________ . chelicerates hexapods...Ch. 28 - Which of the following is not a key advantage...Ch. 28 - Echinoderms have. triangular symmetry radial...Ch. 28 - The circulatory fluid in echinoderms is blood...Ch. 28 - Which of the following features does not...Ch. 28 - The sister taxon of the Chordata is the. Mollusca...Ch. 28 - Describe the different cell types and their...Ch. 28 - Describe the feeding mechanism of sponges and...Ch. 28 - Explain the function of nematocysts in cnidarians.Ch. 28 - Compare the structural differences between...Ch. 28 - Compare the differences in sexual reproduction...Ch. 28 - How does the tapeworm body plan support widespread...Ch. 28 - Describe the morphology and anatomy of mollusks.Ch. 28 - What are the anatomical differences between...Ch. 28 - How does a change in the circulatory system...Ch. 28 - Enumerate features of Caenoihabditis elegans that...Ch. 28 - What are the different ways in which nematodes can...Ch. 28 - Why are tardigrades essential to recolonizing...Ch. 28 - Describe the various superclasses that phylum...Ch. 28 - Compare and contrast the segmentation seen in...Ch. 28 - How do terrestrial arthropods of the subphylum...Ch. 28 - Describe the different classes of echinoderms...
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- What are the internal and external structures together with its function of Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, Scaphopoda?arrow_forwardDefine each of the following with reference to cestodes: scolex, microtriches, proglottids, strobila.arrow_forwardDescribe the differences in the coelomic systems between Oligochaetes and Polychaetes. How do the differences in the coeloms relate to differences in locomotion? Which characteristics unify the lophophorates? Describe each characteristic and how it differs between the lophophorate phyla.arrow_forward
- Draw the structure of nereis and hirudinaria and define its parts?arrow_forwardDescribe characteristics of nematodes and identify four parasitic nematodes.arrow_forwardDescribe the following characteristics of cnidarians: common developmental stage digestive system sexuality musculature ciliationarrow_forward
- animals in which of the following classes possess adductor muscles, labial palps, and use their gills for both respiration and feeding? -Bivalvia -Cephalopoda -Polyplacophora -Anthozoa -Gastropodaarrow_forwardWhat type of symmetry is found in Cnidaria?arrow_forwardIdentify important characteristics of poriferans.arrow_forward
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