1) What does the 4-Part Cnidarian Model show you about the body plan, tissues and c of cnidaria? What does each part of the model show about the body plan of cnidaria?
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- Why are the Cnidaria neither protostomes nor deuterostomes? O they don't have body cavities O they only have 2 dermal layers O their mouth and anus develop simultaneously they only have 1 hole in their digestive cavity O1. Does Cnidaria have muscles and nerves? If no, what animal phylum that does not have muscles and nerves aside from this?For Phylum Mollusca, Class Cephalopod 1. Organ/system characteristics. Answer the following for each organism:a. How is their circulatory system? b. Excretory/osmoregulation: How does the organism eliminate waste? What organs do they use?c. Skeleton/support: List the structures or ways this organism supports itself. 2. Ecology. Describe/answer the following for each organism:a. Does it have a complete or incomplete digestive system? How does this animal feed?b. Identify any unique feeding structure• Be sure to use the correct terms to identify any unique feeding structure(s) used by theanimal.
- The defining feature of the cnidarians is that they all have nematocytes (cnidocytes). These cells; Are nerve cells that allow the cnidarians to sense the environment Are cells lining the gastrovascular cavity Are filter feeding cells on the tentacles Are stinging cells on the tentacles5) The nervous system is ventral in: Sponges = Porifera Annelids Cnidarians Ciliates PlathelminthesList down two 2 concepts for each about the general characteristics of invertebrates (as a whole) as to: (a) body plan, (b) niche, (c) locomotion, (d) reproduction, and (e) evolution.
- How do body structures and functions of a flatworm compare with those of a cnidarian for a. sensory responses to the environment? b. arrangement of the nervous system? c. obtaining food? d. movement? e. excretion of body wastes?Figure 28.45 Which of the following statements about insects is false? Insects have both dorsal and ventral blood vessels. Insects have spiracles, openings that allow air to enter. The trachea is part of the digestive system. Insects have a developed digestive system with a mouth, crop, and intestine.Cnidocytes are found in phylum Porifera phylum Nemertea phylum Nematoda phylum Cnidaria
- 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.What is an unusual feature of the nervous network of cnidarians?4 of 20 Which statement best describes how an earthworm moves? It forms pseudopods that ooze forward or backward. It contracts longitudinal muscles, which puts pressure on the hydrostatic skeleton and causes it to extend. It stretches its longitudinal muscles and pushes its fluid-filled body cavity forward. It alternates contractions of longitudinal and circular muscles. It uses the coordinated beating of many cilia.